SAT Math Practice Question #30691 - SATify | SATify

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SAT Math Practice Question #30691 - SATify | SATify

#30691

systems

linear equations

medium

60 sec

Calculator OK

If $A = 2 x + 3 y$ and $B = 5 x - 3 y$ , and it is given that $A + B = 21$ , what is the value of $7 x$ ?

A.

3

B.

7

C.

21

D.

49