Solve for x, y, z, a
a=1
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-7x=-1
Consider the first equation. Subtract 1 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-1}{-7}
Divide both sides by -7.
x=\frac{1}{7}
Fraction \frac{-1}{-7} can be simplified to \frac{1}{7} by removing the negative sign from both the numerator and the denominator.
x=\frac{1}{7} y=1 z=1 a=1
The system is now solved.
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