Question

Find the value of x and y...

Answer 1

Check the picture below.

`y+12=5y-4\implies 12=4y-4\implies 16=4y\implies \cfrac{16}{4}=y\implies \boxed{4=y} \\\\\\ 3x-5=5y-4\implies 3x-5=5(4)-4\implies 3x-5=16 \\\\\\ 3x=21\implies x=\cfrac{21}{3}\implies \boxed{x=7}`