nickbell3228 nickbell3228

27-03-2017
Mathematics

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y + 4x = 8 and 5x + 2y = 13

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MikeCanDream MikeCanDream

27-03-2017

y + 4x = 8
y = 8 - 4x
substitute 8 - 4x for y in the other equation.
5x + 2(8 - 4x) = 13
5x + 16 - 8x = 13
-3x = -3
x = 1
y = 8 - 4(1) = 4

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