10z-87=z+12

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Solution for 10z-87=z+12 equation:


Simplifying
10z + -87 = z + 12

Reorder the terms:
-87 + 10z = z + 12

Reorder the terms:
-87 + 10z = 12 + z

Solving
-87 + 10z = 12 + z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-1z' to each side of the equation.
-87 + 10z + -1z = 12 + z + -1z

Combine like terms: 10z + -1z = 9z
-87 + 9z = 12 + z + -1z

Combine like terms: z + -1z = 0
-87 + 9z = 12 + 0
-87 + 9z = 12

Add '87' to each side of the equation.
-87 + 87 + 9z = 12 + 87

Combine like terms: -87 + 87 = 0
0 + 9z = 12 + 87
9z = 12 + 87

Combine like terms: 12 + 87 = 99
9z = 99

Divide each side by '9'.
z = 11

Simplifying
z = 11

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