Solve for k
k=-\frac{b}{45}+\frac{7}{9}
Solve for b
b=35-45k
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45k=35-b
Subtract b from both sides.
\frac{45k}{45}=\frac{35-b}{45}
Divide both sides by 45.
k=\frac{35-b}{45}
Dividing by 45 undoes the multiplication by 45.
k=-\frac{b}{45}+\frac{7}{9}
Divide 35-b by 45.
b=35-45k
Subtract 45k from both sides.
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