Question

Find the values of x and y if $(3x+1,2y-7)=(9,-9)$

• A. $x=2\frac{2}{3}$ and $y=-1$
• B. $x=\frac{2}{3}$ and $y=1$
• C. $x=2\frac{2}{3}$ and $y=1$
• D. $x=\frac{4}{3}$ and $y=-1$

Answer 1

The correct option is A $x=2\frac{2}{3}$ and $y=-1$

$3x+1=9⟹3x=8\therefore x=\frac{8}{3}$

$2y-7=-9⟹2y=7-9\therefore y=\frac{-2}{2}⟹y=-1$