Identifying Equivalent Expressions with Negative Numbers

Are the expressions 10b -2b and  2(5b - 1) equivalent?
*Hint-  use the distributive property to see if the second expression when factored out is the same as the first one*

• yes

• no

Is 4n-2 equivalent to  n+3n-2

• yes

• no

Which expression is equivalent to 8c + 6 − 3c − 2 ?

• 5c + 8

• 11c + 4

• 5c + 4

• 11c + 8

Which expression is equivalent to the expression −3 (4x − 2) − 2x ?

• −14x + 6

• −14x − 2

• −16x

• −8x

Which expression is equivalent to 7a − 8 − 12a + 4 ?

• −9a

• −5a − 4

• 19a + 12

• 31a

Simplify: -24 - 13x - 18x + 24

• -31x + 48

• -31x

• -31x - 48

• -31x - 24

Simplify the following expression:

(5 + 4x) + (2x - 8)

• 6x - 3

• 6x - 13

• 13 + 6x

• 6x + 3

Simplify the expression

(5.4y − 2.4 + 9.88y) + (17.65 + 11.2y)

Mathematical Equivalence

ON

Simplify the expression

9 − (8 − 2x)

Mathematical Equivalence

ON

-100 + 10

• -90

• -110

• 90

• 110