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Daniel [21]
3 years ago
15

X=-12-6y -4x+5y=-39slove by the system of substitution

Mathematics
1 answer:
Artist 52 [7]3 years ago
5 0
X = -6y - 12
4x + 5y =-39

                  4x + 5y = -39
     -4(-6y - 12) + 5y = -39
-4(-6y) + 4(12) + 5y = -39
       24y + 48 + 5y = -39
               29y + 48 = -39
                       29y = -87
                            y = -3

x = -6y - 12
x = -6(-3) - 12
x = 28 - 12
x = 6

(x, y) = (6, -3)
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