sophiep21
sophiep21
30-01-2022
Mathematics
contestada
Simultaneous Equations
5x-6y=-4
5x+2y=-12
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vitorfccarvalho
vitorfccarvalho
30-01-2022
Subtract equation 1 from equation 2:
5x - 6y - (5x + 2y) = -4 - (-12)
-8y = -4 + 12
-8y = 8
y = -1
Plug y into any of the equations to find x. Plugging into the first equation:
5x - 6(-1) = -4
5x + 6 = -4
5x = -10
x = -2
Hope this helps!
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