Single Variable Equation

An inverse operation is

• reversing the sign in an inequality

• using the opposite operation to solve equations

•  A number’s distance from zero

What step would be used to solve for the "variable term" first?

• add 16 to both sides

• divide both sides by 3

• multiply both sides by 3

• subtract 5 from both sides

33 = 4a - 7

• a=-10

• a=10

• a=4.5

4 = 2(x + 3)

• 1/2

• 7/2

• -1

• 5

6(x+3)=48

• x=2

• x=5

• x=12

• x=6

Simplify each equation. Tell whether the equation has one, no, or infinite solutions.

3x - 8 = 3(x - 4) + 1

• one

• no solutions

• infinite solutions

6(m+3)=2(m+5)

• No solution

• One Solution

• Infinite Solutions

What is the value of 2x when x = 5?

• 10

• 15

• 20

• 25

What is the solution to the equation r + 2 = 13?

• r = -11

• r = 11

• r = 15

• r = 26

Equations must have an

• ≠

• =

• ≤

• ≥