Answer
Multiply both sides by $\frac{4}{3}$
Work Step by Step
$\frac{3}{4}b\leq3$
Mulitply both sides by $\frac{4}{3}$:
$\frac{3}{4}b\times\frac{4}{3}\leq3\times\frac{4}{3}$
$b\leq4$
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