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Envision Math 2.0: Grade 6, Volume 1

EM

Envision Math 2.0: Grade 6, Volume 1 View details

Review

Exercise 6 Page 247

Use the Subtraction Property of Equality to get rid of the addition.

x=17

Practice makes perfect

To solve an equation, we isolate x on one side. Using the Subtraction Property of Equality, we will subtract 8 from both sides of the equation.

8+x=25

LHS-8=RHS-8

8+x-8=25-8

CommutativePropAdd

Commutative Property of Addition

x+8-8=25-8

Subtract terms

x=17

To check that this solution is correct, let's substitute x=17 into the original equation and simplify.

8+x=25

x= 17

8+ 17? =25

Add terms

25=25 ✓

Since the left-hand side and the right-hand side are equal, x=17 is the correct solution.

Subchapter links

Topic Essential Question p.245

Vocabulary Review p.245

Use Vocabulary in Writing p.245

1 Understand Equations and Solutions p.246

2 Apply Properties of Equality p.246

3-4 Write and Solve Addition, Subtraction, Multiplication, and Division Equations p.247

5 Write and Solve Equations with Rational Numbers p.247

6 Understand and Write Inequalities p.248

7 Solve Inequalities p.248

8 Understand Dependent and Independent Variables p.249

9 Use Patterns to Write and Solve Equations p.249

10 Relate Tables, Graphs, and Equations p.250