Algebra Variable

Simplify the expression:
5 + 9(5 - p)

• 50 - 9p

• 50 + 9p

• 45 - 9p

• 40 + 9p

Solve for the missing variable:
2 + ⁿ/₅ = 14

• n = 60

• n = 80

• n = 24

• n = 36

Challenge Question!
Simplify the expression:
9(1-10m) + 5(-8m + 1)

• 130m + 14

• -130m + 4

• 40m +10

• -130m + 14

A letter or symbol that stands for a number in an equation is a

• addend

• mystery number

• expression

• variable

A mathematical sentence that contains >, < , > , or <

• Inequality

• expression

• equation

• Unbalanced expressions

the opposite operation used in algebra to eliminate an operation (undo). 

• Converse operations

• shoes

• Inverse operations

• Converted operations

When signs are the same add and keep the sign. When signs are different subtract the absolute values and keep the sign of the larger absolute value.

• True

• False

A _______ is a symbol, usually a letter, that is used to represent an unknown number.

• solution

• coefficient

• variable

• solution

Combine like terms: 12x+7y - 3x - 2y

• 9x -5y

• 9x + 5y

• 15x + 9y

• 15x - 9y

Which answer contains like terms?

• 4x and 7x

• 3y and 3x

• 4x² and 4x

• 52 and 9z