Solve.

y=2x - 7
3x - 4y=8

1 answer

Eq1: Y = 2X - 7.
Eq2: 3X - 4Y = 8.

In Eq2, substitute 2X - 7 for Y:
3X - 4(2X - 7) = 8,
3X - 8X +28 = 8,
-5X = 8 - 28 = -20,
X = 4.

In Eq1, substitute 4 for X:
Y = 2*4 - 7 = 1.

Solution Set = (X,Y) = (4,1).

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