Question

What is the solution to this system of equations: y=5x+10 and y=-3x+90?

Answer 1

Answer:

x=88

y=420

Step-by-step explanation:

Multiply the first equation by 3 and the second by 5 to cancel out.

$y=15x+30\\y=-15x+450\\y=420$

Now plug y into one of the original equations.

$y=5x+10\\450=5x+10\\440=5x\\x=88$

Hope this helps! <3