OBJECTIVE: Students will solve multistep equations.

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Presentation transcript:

OBJECTIVE: Students will solve multistep equations. January 19, 2010 Math 102 OBJECTIVE: Students will solve multistep equations. AIM: How do we solve multistep equations using the distributive property, combining like terms, and moving variables to one side of the equation? STANDARDS: 7.A.4 PRIOR KNOWLEDGE: Given the expression 5y + 7 What do we call 5y and 7? __________ 7 is a _________ y is a _________ 5 is a _________

MINI LESSON: An equation is a mathematical sentence using an equal sign Examples: -5x = 16x2 z = 17 2 + 3 = 5 ________________________________________________ Solve the equation 9n + 36 = 54 Strategy isolate n Step 1 Subtract 36 from both sides of the equation Step 2 Do the math

Step 3 Divide both sides of the equation by 9 Step 4 Do the math Solution: Another way…Flowcharts!

Solve the equation -2n + 7(n – 5) = 105 Step 1 Use the distributive property to multiply 7(n – 5) Step 2 Rewrite the equation Step 3 Add the like terms

Step 4 Add 35 to both sides Step 5 Divide both sides by 5 Solution: Another way with Flowcharts

HOMEWORK: Solve the equations 5n – 50 = 120 -15 + y + 5 = 75 4b + 9b - 2b = 132 5t – 2(t – 3) = 33 N – 4 = -6 18