Quiz on Solving Equations with Variables on Both Sides

Solve:
7x = 3x + 24

• 6

• 10

• 14

• 4

Solve the equation:
-8x - 8 + 3(x-2) = -3x + 2

• x = -8

• x = 8

• x = 2

• x = -2

-10x - 135 = 117 + 2x

• 25

• -18

• -21

• 22

8w - 8 = -4x + 16

• 8

• 16

• 24

• 2

2c - 12 = 9c + 2

• 14

• 2

• -2

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

• 14

• 0

• -11

• 4

Tags

CCSS.8.EE.C.7B

50 = 28.1 + 0.15a

• a= 150

• a= 146

• a= 6

• a= 155

Tags

CCSS.7.EE.B.4A

Solve the equation
12x - 15 = 3(2x+3)

• x = 4

• x = -4

• x = 2

• x = -2

Answer explanation

To solve the equation, first distribute the 3 on the right side: 12x - 15 = 6x + 9. Then, isolate x by moving 6x to the left side: 12x - 6x = 9 + 15. Simplify to get 6x = 24, and divide by 6 to find x = 4.

7x = 4x + 33

• x = 3

• x = 11

• x = 21

• x = 88

Answer explanation

To solve the equation, subtract 4x from both sides to get 3x = 33. Then divide by 3 to find x = 11, which is the correct answer.

Tags

CCSS.7.EE.B.4A

Solve for x:

3x - 7 = -5x + 17

• x = 5

• x = 12

• x = 3

• x = 1.2

Answer explanation

To solve for x, combine like terms: 3x + 5x = 17 + 7. This simplifies to 8x = 24. Divide by 8 to get x = 3, which is the correct answer.