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

Question

asked Aug 4, 2021 225k views

1 Answer

Lhs · Answer 1 · 2021-08-11T18:03:10+0000

Answer:

x=88

y=420

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