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Solve the following system of equations.

x+4y=8 (1)
x=5-4y (2)

1 answer

Substitute 5 - 4y for x in the first equation, and solve that.

5 - 4y + 4y = 8
5 = 8 ?

Since 5 cannot equal 8, there are no solutions. The two equations represent parallel nonintersecting lines.
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