SAT Math Practice Question #7471 - SATify | SATify

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SAT Math Practice Question #7471 - SATify | SATify

#7471

algebra

factorization

expressions

simplification

medium

100 sec

Which expression is equivalent to
$\frac{3 a + b}{a + 4} + \frac{5 b}{a ^{2} b + 4 ab}$ ?

A.

$\frac{3 a ^{2} b + a b ^{2} + 5 b}{a ^{2} b + 4 ab}$

B.

$\frac{3 a + a b ^{2} + 5 b}{a ^{2} b + 4 ab}$

C.

$\frac{3 a ^{2} b + a b ^{2} + 5 b}{a + 4}$

D.

$\frac{3 a ^{2} b + a b ^{2} + 5 b}{ab ( a + 4 ) ^{2}}$