Solve for a
a=-\frac{17c}{10}+\frac{155}{2}
Solve for c
c=\frac{775-10a}{17}
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10a=775-17c
Subtract 17c from both sides.
\frac{10a}{10}=\frac{775-17c}{10}
Divide both sides by 10.
a=\frac{775-17c}{10}
Dividing by 10 undoes the multiplication by 10.
a=-\frac{17c}{10}+\frac{155}{2}
Divide 775-17c by 10.
17c=775-10a
Subtract 10a from both sides.
\frac{17c}{17}=\frac{775-10a}{17}
Divide both sides by 17.
c=\frac{775-10a}{17}
Dividing by 17 undoes the multiplication by 17.
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