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Dominick Mckenzie
Mathematics
25 April, 12:17
3+y=-x
-5x+2y=8
solve in standard form
+2
Answers (
2
)
Ahmad Alexander
25 April, 12:28
0
Rewrite in standard form
x+y = - 3
the second equation is already in standard form.
now, solve for x
x = - 3-y
substitute into the other equation and solve for y
-5 (-3 - y) + 2y = 8
15 + 5y + 2y = 8
15 + 7y = 8
7y = - 7
y = - 1
now substitute into the original equation
x + - 1 = - 3
x = - 2
answer (-2, - 1)
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Isabella Callahan
25 April, 12:46
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First answers x+y = - 3
5x-2y = - 8
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