9z+9-z=4+7z-7

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Solution for 9z+9-z=4+7z-7 equation:


Simplifying
9z + 9 + -1z = 4 + 7z + -7

Reorder the terms:
9 + 9z + -1z = 4 + 7z + -7

Combine like terms: 9z + -1z = 8z
9 + 8z = 4 + 7z + -7

Reorder the terms:
9 + 8z = 4 + -7 + 7z

Combine like terms: 4 + -7 = -3
9 + 8z = -3 + 7z

Solving
9 + 8z = -3 + 7z

Solving for variable 'z'.

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

Add '-7z' to each side of the equation.
9 + 8z + -7z = -3 + 7z + -7z

Combine like terms: 8z + -7z = 1z
9 + 1z = -3 + 7z + -7z

Combine like terms: 7z + -7z = 0
9 + 1z = -3 + 0
9 + 1z = -3

Add '-9' to each side of the equation.
9 + -9 + 1z = -3 + -9

Combine like terms: 9 + -9 = 0
0 + 1z = -3 + -9
1z = -3 + -9

Combine like terms: -3 + -9 = -12
1z = -12

Divide each side by '1'.
z = -12

Simplifying
z = -12

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