Mixed Review of Solving Equations

What is the definition of a variable?

• The letter used to represent a quantity
• The little number or letter used to raise to a power
• The number in front of a variable
• The number with no variable

Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.6

In this expression, 2x + 6y - 10, which are the coefficients?

• 2, 6, and -10
• x and y
• 2 and 6
• -10

Using the "opposite operation" to "undo" and isolate the variable when solving an equation is more commonly called...

• Inverse operations
• math
• variable
• PEMDAS

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.7

Solve for n.

-13 = n + 18

• 5

• -5

• -21

• -31

Simplify:

5(3x + 1)

• 15x + 1

• 15x + 5

• 8x + 1

• 8x + 6

Sove for x.

10x + 9 = 4x - 9

• 0

• 3

• -3

• -18

What is the inverse operation of adding (+)?

• Adding (+)
• Subtracting (-)
• Multiplying (×)
• Dividing (÷)

Tags

CCSS.2.NBT.B.7

CCSS.2.NBT.B.9

CCSS.2.OA.A.1

Solve for y.

3y = -15

• -5

• 5

• -3

• 3

Solve for x.

-4x + 1 = 21

• x = 120

• x = 5

• x = 30

• x = -5

Solve for x.

7x - 3x - 8 = 24

• 8

• -8

• 3.2

• 4