Solve for z
z=4
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8z+4=-9\left(-4\right)
Multiply both sides by -4.
8z+4=36
Multiply -9 and -4 to get 36.
8z=36-4
Subtract 4 from both sides.
8z=32
Subtract 4 from 36 to get 32.
z=\frac{32}{8}
Divide both sides by 8.
z=4
Divide 32 by 8 to get 4.
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