substitution method. x = 4 + -4y x + 4y = 7

substitution method.
 x = 4 + -4y
x + 4y = 7
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x=4+-4y is the same as x+4y=4 but x+4y=7 according to the second equation. So that would imply 4=7, which can never be true. Therefore the equations are inconsistent and there is no solution.

by Top Rated User (1.1m points)

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