Solve for x
x=\frac{1000000-10z-y_{2}}{7}
Solve for y_2
y_{2}=1000000-10z-7x
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7x+10z=1000000-y_{2}
Subtract y_{2} from both sides.
7x=1000000-y_{2}-10z
Subtract 10z from both sides.
7x=1000000-10z-y_{2}
The equation is in standard form.
\frac{7x}{7}=\frac{1000000-10z-y_{2}}{7}
Divide both sides by 7.
x=\frac{1000000-10z-y_{2}}{7}
Dividing by 7 undoes the multiplication by 7.
y_{2}+10z=1000000-7x
Subtract 7x from both sides.
y_{2}=1000000-7x-10z
Subtract 10z from both sides.
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