Solve for b
b=4\left(z-7\right)
Solve for z
z=\frac{b+28}{4}
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7+\frac{b}{4}=z
Swap sides so that all variable terms are on the left hand side.
\frac{b}{4}=z-7
Subtract 7 from both sides.
b=4z-28
Multiply both sides of the equation by 4.
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