Question

find the solution of the system of equation . 3x-y=19 3x-4y=-5

Answer 1

Answer:

x=9 , y=8

Step-by-step explanation:

$x=\frac{19+y}{3}$

$3\cdot \frac{19+y}{3}-4y=-5$

$19-3y=-5$

$y=8$

and now

$x=\frac{19+y}{3}$

$x=9$