Solve for x, y, z
x=a
y=4a+3
z=a
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x=z z=a
Solve the second equation for x and the third equation for z.
x=a
Substitute a for z in the equation x=z.
y=4a+3
Substitute a for x in the equation y=4x+3.
x=a y=4a+3 z=a
The system is now solved.
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