Solve for A
A=\frac{355-3B}{8}
Solve for B
B=\frac{355-8A}{3}
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40A=1775-15B
Subtract 15B from both sides.
\frac{40A}{40}=\frac{1775-15B}{40}
Divide both sides by 40.
A=\frac{1775-15B}{40}
Dividing by 40 undoes the multiplication by 40.
A=\frac{355-3B}{8}
Divide 1775-15B by 40.
15B=1775-40A
Subtract 40A from both sides.
\frac{15B}{15}=\frac{1775-40A}{15}
Divide both sides by 15.
B=\frac{1775-40A}{15}
Dividing by 15 undoes the multiplication by 15.
B=\frac{355-8A}{3}
Divide 1775-40A by 15.
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