Solve 1 Step 2 Step Variables Both Sides

Where is the first mistake?

• Distribution of the 5

• Distribution of the 10

• subtracting 60x from both sides

• dividing by -50

What would be the best first step to solving the equation in one step?

• multiply both sides by ³/₂ 

• divide both sides by 3

• multiply both sides by 3

• subtract ²/₃  from both sides

What is the solution for x + 9 = 21

• 10

• 12

• 11

• 13

Solve for b
2b = -16

• 8

• 4

• -8

• 3

x = 20

• x = 20

• x = 7

• x = 10

• x = 3

x - 8 = -5 

• 13

• -13

• 3

• -3

r + 20 = 27

• r = 7

• r = 47

• r = 13

• r = 20

In the equation
x + 7 = 12
7 is being added to the variable, x. How should you show your work to isolate the variable and solve the equation? 

• Subtract 7 from both sides. The solution is x = 5.

• Add 7 to both sides.
  The solution is x = 19.

• Multiply both sides by 7 The solution is x = 84.

When solving an equation, our goal is to:

• add all the numbers together.

• use a calculator.

• eat lunch.

• isolate the variable to solve.

What would be the best first step to solving the equation?

• multiply both sides by 3

• multiply both sides by 4

• divide both sides by 3

• divide both sides by 4