Question

Find the solution to the system of equations by

using
substitution.
y = -2x + 13
4x + 8y = 20

Answer 1

the solution is (7,-1)

Explanation:

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4x + 8(-2x+13)=20

4x -16x + 104 = 20

-12x + 104 *-104* = 20 -104

-12x/-12 = -84/-12

x = 7

y = -2(7) + 13

y = -14 + 13

y = -1