SAT Math Practice Question #14957 - SATify | SATify

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SAT Math Practice Question #14957 - SATify | SATify

#14957

algebra

expressions

easy

25 sec

Simplify the expression: $15 a - 6 a$

A.

$9 a$

B.

$21 a$

C.

$9$

D.

$21$