Solve for a
a=\frac{18609234850-10b}{9}
Solve for b
b=-\frac{9a}{10}+1860923485
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9a+10b=18609234850
Swap sides so that all variable terms are on the left hand side.
9a=18609234850-10b
Subtract 10b from both sides.
\frac{9a}{9}=\frac{18609234850-10b}{9}
Divide both sides by 9.
a=\frac{18609234850-10b}{9}
Dividing by 9 undoes the multiplication by 9.
9a+10b=18609234850
Swap sides so that all variable terms are on the left hand side.
10b=18609234850-9a
Subtract 9a from both sides.
\frac{10b}{10}=\frac{18609234850-9a}{10}
Divide both sides by 10.
b=\frac{18609234850-9a}{10}
Dividing by 10 undoes the multiplication by 10.
b=-\frac{9a}{10}+1860923485
Divide 18609234850-9a by 10.
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