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Solve for x, y
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3x=7-4
Consider the first equation. Subtract 4 from both sides.
3x=3
Subtract 4 from 7 to get 3.
x=\frac{3}{3}
Divide both sides by 3.
x=1
Divide 3 by 3 to get 1.
1-y=1
Consider the second equation. Insert the known values of variables into the equation.
-y=1-1
Subtract 1 from both sides.
-y=0
Subtract 1 from 1 to get 0.
y=0
Divide both sides by -1. Zero divided by any non-zero number gives zero.
x=1 y=0
The system is now solved.