Math 8 Skills Practice: Equations

Solve the equation for x.

5x - 14 = 8x + 4

• x = 6
• x = -6
• x = -18/13
• x = 10/3

Solve the equation for x.

7x - 4 = 3 + 8x

• x = 7
• x = -7
• x = 2/7
• x = 11

Solve the equation for x.

10x + 9 = 4x - 9

• x = 0

• x = 3

• x = -3

• x = -18

• a = 20

• a = 14

• a = 5

• a = -10

Tags

CCSS.7.EE.B.4A

Solve for y:

5x + y = 16

• y = -5x + 16

• y = 5x + 16

• y = 5y - 16

• y = -5x - 16

Tags

CCSS.6.EE.C.9

Solve m - n = 5 for m.

• m = n + 5

• m = n - 5

• m = 5n

• m = 5 - n

Tags

CCSS.6.EE.C.9

Solve for x.

z = xy

• x = ^z/_y

• x = ^y/_z

• x = yz

• x = z - y

Tags

CCSS.HSA.CED.A.4

Javier has saved $55 toward the purchase of an IPOD. The IPOD costs $145. Which equation represents the amount Javier needs to save to by the IPOD?

• 55 + x = 145

• 145x = 55

• 55 - x = 145

• 145 (55) = x

Tags

CCSS.HSA.CED.A.3

Which choice models this situation?

Anna participated in a read-a-thon. Mr. Cole pledged $4 per book and gave Anna $44. How many books did Anna read?

• b - 4 = 44

• b + 4 = 33

• 4b = 44

• b/4 = 44

Tags

CCSS.HSA.CED.A.3

Jim paid a gym membership fee of $50,plus $20 per month. Jim has paid a total of $290 to the gym. How many months has Jim been a member of the gym? Which choice models this situation?

• 50 + 20m = 290

• 20 + 50m = 290

• 50 + 20 = m

• 50m - 20 = 290

Tags

CCSS.HSA.CED.A.3