Envision Math 2.0: Grade 7, Volume 2
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Envision Math 2.0: Grade 7, Volume 2 View details
2. Solve Two-Step Equations
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Exercise 11 Page 263

Gather all of the variable terms on one side of the equation and all of the constant terms on the other side.

n = 30

Practice makes perfect
To solve an equation, we should first gather all of the variable terms on one side and all of the constant terms on the other side using the Properties of Equality. In this case, we need to use the Subtraction and the Multiplication Property of Equality to solve the equation.
n/10+7=10
n/10+7-7 = 10-7
n/10 = 3
n/10* 10 = 3 * 10
n=3 * 10
n = 30