7th Grade Express. & Equations Review

Simplify:

5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 4ab + 4

Factor:

35c - 15d

• 5(7c + 3d)

• 5(7d - 3c)

• 5(7c - 3d)

Solve:

-4x = 44

• x = 48

• x = -11

• x = 40

Write an equation for the following situation:

A square with sides s has a perimeter of 28. What are the length of the sides? (You do not need to solve.)

• 4/s=28

• 28s=4

• 4s=28

Simplify:

¼ (-8x + 24)

• -2x + 6

• 2x + 6

• -2x - 6

Simplify:

n -10 +9n -3=

• -3

• 9n-3

• 10n -13

Factor:

-3x - 15

• -3 (x+ 5)

• 3 (x + 5)

• -3 (x -5)

Solve:

17 = x + 3

• x = 20

• x = 14

• x = 13

Translate the sentence into an equation:

Four more than three times a number is 19.

• 3x - 4 = 19

• 4 + 3x = 19

• 7x = 19

Simplify:

⅓(9 + 15t)

• 12 + 18t

• 24t

• 3 + 5t