Equation and Expression Review

Simplify an expression for the perimeter of an equilateral triangle that has a side of 1.5x-3

• 1.5x-3

• 4.5x-9

• 4.5x+9

• x=9

Tags

CCSS.7.EE.A.1

Which of the following has a simplified value of 8x-4

• 10x+6x-9-8

• 2(3x-5)

• 2(4x-2)

• -10x+2x-4-4

Tags

CCSS.7.EE.A.1

Distribute and simplify -1/3(9x+18)

• -3x+6

• 3x+6

• 3x-6

• -3x-6

Tags

CCSS.7.EE.A.1

Distribute and simplify:

6-2(x-9)+5x

• 3x-3

• 7x-15

• 3x+24

• 3x-24

Tags

CCSS.6.EE.A.3

Distribute and simplify

-7+0.3(-4x+20)+8.8x

• 7.6x-1

• 7.6x+1

• 10x+27

• -10x-13

Tags

CCSS.6.EE.A.3

Below is a two-step, linear equation.

What is the first step when solving?

15-2x=-0.98

• Add 2x to both sides

• Subtract 2x from both sides

• Add 0.98 to both sides

• Subtract 15 from both sides

Tags

CCSS.7.EE.B.4A

Solve the equation below:

(x/1.2)-18=2

• x=-24

• x=18.2

• x=-18.2

• x=24

Tags

CCSS.7.EE.B.4A

Solve the equation below:

28= -2 + 9x +14 - x

• x=3

• x=2

• x=4

• x=-3

Tags

CCSS.8.EE.C.7B

Which of the following shows the equation after both sides have been distributed correctly?

-5(x+3)= -7(x+8)

• -5x+15=-7x+56

• -5x-15=-7x-56

• -5x-2= -7x-1

• 5x-15=7x+56

Tags

CCSS.7.EE.A.1

The perimeter of a rectangle is 42 inches. If one side is 5x, and the other side is (x-3), then what does x equal?

• x=2

• x=-3

• x= 3

• x=-2

Tags

CCSS.8.EE.C.7B