X-3y=17

-6x+5y=-11

Solving systems by substitution

Answer: x=-4, y=-7

Step-by-step explanation:

x-3y=17 Add 3y to both sides to isolate x.

x=3y+17 Now you can substitute this into the other equation.

-6 (3y+17) + 5y=-11

-18y-102+5y=-11

-13y-102=-11

-13y=91

y=-7 Substitute this back into any equation to find x.

x-3 (-7) = 17

x+21=17

x=-4