Solving Equations with a Variable on Both Sides

7x = 3x + 24

• 6

• 10

• 14

• 4

Solve for x:
5x - 14 = 8x + 4

• x = 6

• x = -6

• x = -18/13

• x = 10/3

14p - 8 = 22 + 20p

• -5

• 5

• 30

• -30

What is the first step to solve this equation:

-11 - 3x = 44 - 2x

• Add 3 to both sides

• Get the variable on one side

• Add 11 to both sides

• Add 2 on both sides.

Solve for x:
4(1-x)+3x=-2(x+1)

• x = -6

• x = 6

• x = 3

Solve:
5y+34 = -2(-7y+1)

• y = -4

• y = 9

• y = 4

• y = 36/19

-(8n - 2) = 3 + 10(1 - 3n)

• n = 1/2

• n = -1/2

• n = 2

Solve

• p = -1

• p = -3

• p = 13/11

• p = 1

Tags

CCSS.8.EE.C.7B

Solve

• s = -40

• s= 40

• s=20

• s= -20

Tags

CCSS.8.EE.C.7B

Select the situation that could be modeled by: 120 + 25x = 45x.

• John bought a car radio for $120 and speakers for $25 each. Joe bought a radio for $45. They each paid the same. How much did they spend?

• George charges a flat fee of $120 to mow a lawn plus $25 an hour. Greg charges $45 a hour to mow a lawn. After how many hours do they make the same amount?

• Lisa pays $120 for each purse she buys plus an additional $25 to have them personalized. Lauren pays $45 for each purse she buys. How many purses must they buy for the amount they spent to be the same?