Question

Find the substitution 2x+3y=-5 and y=-x+5

Answer 1

Answer: x = 20, y = -15

Step-by-step explanation:

Since we already know that $y=-x+5$, we can just substitute in that value of y into the other equation:

$2x+3y=-5\\2x+3(-x+5)=-5\\2x-3x+15=-5\\-x=-5-15\\-x=-20\\x=20$

with the value of x, we can find the value of y:

$y=-x+5=-20+5=-15$