Learn to solve equations with integers.

Multiplying and Dividing to Solve Equations Steps: 1 Find the variable (letter) 2. What is the number next to the variable doing (multiplying or dividing)? 3. Do the OPPOSITE of what that number is doing to BOTH of the numbers on each side of the equal sign 4. How many negative signs are there on the side without the variable? *1 negative sign = Negative answer *2 negative signs = Positive answer

Solve. A. –5x = 35 –5x = 35 –5 Divide both sides by –5. x = –7 Additional Example 2A: Multiplying and Dividing to Solve Equations Continued Solve. A. –5x = 35 –5x = 35 –5 Divide both sides by –5. x = –7

Solve. z 4 B. = -5 z 4 Multiply both sides by 4. 4 = 4  -5 z = –20 Additional Example 2B: Multiplying and Dividing to Solve Equations Continued Solve. z 4 B. = -5 4 = 4  -5 z 4  Multiply both sides by 4. z = –20

Solve. A. –7x = 42 –7x = -42 Divide both sides by –7. –7 x = 6 Try This: Example 2A Solve. A. –7x = 42 –7x = -42 –7 Divide both sides by –7. x = 6

Multiply both sides by –3. Try This: Example 2 Solve. z –3 B. = -9 –3 = –3  -9 z –3  Multiply both sides by –3. z = 27

Lesson Quiz: Part 1 Solve. 1. t + 9 = –8 t = –17 2. –15 = 3b b = –5 x –4 3. = –6 x = 24 4. z – 16 = -20 z = -4