Download presentation

Presentation is loading. Please wait.

Published byBethany Hensell Modified over 3 years ago

1
**Inverse Operations Operation Inverse Operation**

Solving an equation that contains multiplication or division is similar to solving an equation that contains addition or subtraction. Use inverse operations to undo the operations on the variable. Inverse Operations Operation Inverse Operation Multiplication Division Division Multiplication

2
Solve the equation. –8 = j 3 Since j is divided by 3, multiply both sides by 3 to undo the division. –24 = j Check –8 = j 3 –8 –24 3 To check your solution, substitute –24 for j in the original equation. –8 –8

3
Solve the equation. = 2.8 n 6 Since n is divided by 6, multiply both sides by 6 to undo the division. n = 16.8 Check = 2.8 n 6 2.8 16.8 6 To check your solution, substitute 16.8 for n in the original equation.

4
Whiteboards Solve the equation. Check your answer. = 10 p 5

5
Whiteboards Solve the equation. Check your answer. –13 = y 3

6
Whiteboards Solve the equation. Check your answer. = 7 c 8

7
**Solve the equation. Check your answer.**

Since y is multiplied by 9, divide both sides by 9 to undo the multiplication. y = 12 Check 9y = 108 To check your solution, substitute 12 for y in the original equation. 9(12) 108

8
**Solve the equation. Check your answer.**

Since v is multiplied by –6, divide both sides by –6 to undo the multiplication. 0.8 = v Check –4.8 = –6v –4.8 –6(0.8) To check your solution, substitute 0.8 for v in the original equation. –4.8 –4.8

9
Whiteboards Solve the equation. Check your answer. 16 = 4c

10
Whiteboards Solve the equation. Check your answer. 0.5y = –10

11
Whiteboards Solve the equation. Check your answer. 15k = 75

12
**Remember that dividing is the same as multiplying by the reciprocal**

Remember that dividing is the same as multiplying by the reciprocal. When solving equations, you will sometimes find it easier to multiply by a reciprocal instead of dividing. This is often true when an equation contains fractions.

13
**To check your solution, substitute 24 for w in the original equation. **

Solve the equation. 5 w = 20 The reciprocal of is Since w is multiplied by , multiply both sides by 5 6 6 w = 24 Check w = 20 5 6 To check your solution, substitute 24 for w in the original equation. 20 20 20

14
**To check your solution, substitute for z in the original equation.**

Solve the equation. 3 1 8 = z 16 The reciprocal of is 8. Since z is multiplied by , multiply both sides by 8. 1 8 = z 3 2 Check 1 8 3 16 = z To check your solution, substitute for z in the original equation. 3 2 3 16

15
Whiteboards Solve the equation. Check your answer. 1 4 1 5 – = b

16
Whiteboards Solve the equation. = 4j 6 2 3

17
Whiteboards Solve the equation. 1 w = 102 6

18
Whiteboards The distance in miles from the airport that a plane should begin descending, divided by 3, equals the plane's height above the ground in thousands of feet. A plane began descending 45 miles from the airport. Use the equation to find how high the plane was flying when the descent began. The plane was flying at 15,000 ft when the descent began.

Similar presentations

OK

Warm Ups {(2,0) (-1,3) (2,4)} Write as table Write as graph

Warm Ups {(2,0) (-1,3) (2,4)} Write as table Write as graph

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google

Ppt on idea cellular advertisement Ppt on microsoft excel 2003 Ppt on writing a persuasive essay Ppt on national parks and sanctuaries in india Ppt on english speaking course Ppt on outside activities for preschoolers Ppt on case study in psychology Ppt on object-oriented programming concepts Ppt on singular plural for grade 1 Download ppt on first law of motion