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Mathematics
Happy
20 October, 06:12
3x-y=-1 and 2x+y=-14 how to solve showing work?
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Grizzly
20 October, 06:46
0
3x - y = - 1 ⇒ 6x - 3y = - 2
2x + y = - 14 ⇒ 6x + 2y = - 42
-5y = 40
-5 - 5
y = - 8
3x - (-8) = - 1
3x + 8 = - 1
-8 - 8
3x = - 9
3 3
x = - 3
(x, y) = (-3, - 8)
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