Solve for z
z=-14
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28z-28=30z
Use the distributive property to multiply 28 by z-1.
28z-28-30z=0
Subtract 30z from both sides.
-2z-28=0
Combine 28z and -30z to get -2z.
-2z=28
Add 28 to both sides. Anything plus zero gives itself.
z=\frac{28}{-2}
Divide both sides by -2.
z=-14
Divide 28 by -2 to get -14.
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