Solve for a
a=\frac{366-31c-30b}{29}
Solve for b
b=-\frac{29a}{30}-\frac{31c}{30}+\frac{61}{5}
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29a+31c=366-30b
Subtract 30b from both sides.
29a=366-30b-31c
Subtract 31c from both sides.
29a=366-31c-30b
The equation is in standard form.
\frac{29a}{29}=\frac{366-31c-30b}{29}
Divide both sides by 29.
a=\frac{366-31c-30b}{29}
Dividing by 29 undoes the multiplication by 29.
30b+31c=366-29a
Subtract 29a from both sides.
30b=366-29a-31c
Subtract 31c from both sides.
30b=366-31c-29a
The equation is in standard form.
\frac{30b}{30}=\frac{366-31c-29a}{30}
Divide both sides by 30.
b=\frac{366-31c-29a}{30}
Dividing by 30 undoes the multiplication by 30.
b=-\frac{29a}{30}-\frac{31c}{30}+\frac{61}{5}
Divide 366-29a-31c by 30.
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