Solve Equations with Variables on Both Sides

Solve the equation for the variable

• 4

• -10

• 1

• -1

Solve the equation for the variable

The square and equilateral triangle below have the same perimeter. Find the value of x. Then, find the perimeter of each shape. Equation:​ (a)   X = ​ (b)   Perimeter: ​ (c)  

• 2

• 36

• 5

• 42

Tags

CCSS.8.EE.C.7B

Jacob solved the following equation using the steps shown.

Step 1 5x + 9 = 2x - 3

Step 2 3x + 9 = -3

Step 3 3x = -12

Step 4 x = -4

What operation did he perform to get from Step 1 to Step 2?

• Subtracted 2x from both sides of the equation

• Subtracted 9 from both sides of the equation

• Multiplied both sides of the equation by 3

• Added -3 to both sides of the equation

Tags

CCSS.HSA.REI.A.1

8w - 8 = -4x + 16

• 8

• 16

• 24

• 2

2c - 12 = 9c + 2

• 14

• 2

• -2

12x - 15 = 3(2x+3)

• x = 4

• x = -4

• x = 2

• x = -2

Tags

CCSS.8.EE.C.7B

-6(1 - 6r) = -2(r + 3)

• 14

• 0

• -11

• 4

Tags

CCSS.8.EE.C.7B

What is the first step you should take to solve this problem?

-3(x - 2) = -8 +9b

• add 8 to both sides

• subtract 9b from both sides

• Distribute -3 to the x and -2

Tags

CCSS.7.EE.B.4A

50 = 28.1 + 0.15a

• a= 150

• a= 146

• a= 6

• a= 155

Tags

CCSS.7.EE.B.4A