Algebraic Expressions Substituting

When you substitute a number you...

• replace a number with a different number

• replace an operation with a different operation

• replace a variable with a number

• subtract the number from another number

What is the coefficient of 3b

• b

• 3

Simplify the expression:
8(5 + w)

• 40 + w

• 40+8w

• 85 + 8w

• 13+8w

Which of the following is equivalent to 5(2x + 6)?

• 10x + 30

• 10x + 6

• 40x

• 2x + 30

Evaluate each expressions when x=2. Then match the expression to the correct answer.

• 10

• 5x

• 5

• 8 / x

• 4

• x + 7

• 9

• 3x - 1

• 12

• 14 - x

Mathematical Equivalence

ON

Evaluate each expressions when x=2. Then match the expression to the correct answer.

• 9

• x + 7

• 4

• 14 - x

• 12

• 8 / x

• 5

• 5x

• 10

• 3x - 1

Mathematical Equivalence

OFF

Mathematical Equivalence

OFF

Find an equivalent expression for the given expression: 36x + 24

• 4(9x + 7)

• 4(9x + 8)

• 2(18x + 12)

• 12(3x + 3)