body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Envision Math 2.0: Grade 6, Volume 1

EM

Envision Math 2.0: Grade 6, Volume 1 View details

Review

Exercise 12 Page 247

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

x=16

Practice makes perfect

To solve an equation, we isolate x on one side. Using the Subtraction Property of Equality, we will subtract 15 from both sides of the equation.

x+15=31

LHS-15=RHS-15

x+15-15=31-15

Subtract terms

x=16

To check that this solution is correct, let's substitute x=16 into the original equation and simplify.

x+15=31

x= 16

16+15? =31

Add terms

31=31 ✓

Since the left-hand side and the right-hand side are equal, x=16 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