Multiply Both Sides of Each Equation by a Common Denominator $\frac{7 x}{3}+\frac{5 y}{4}=4$

Multiple Choice

Multiply both sides of each equation by a common denominator to eliminate the fractions. Then solve the system.
- $\frac{7 x}{3}+\frac{5 y}{4}=4$
$\frac{5 x}{6}-2 y=21$

A) $(6,8)$
B) $(-6,8)$
C) $(6,-8)$
D) $(-6,-8)$