8+7z-1=9z+12-7z

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Solution for 8+7z-1=9z+12-7z equation:


Simplifying
8 + 7z + -1 = 9z + 12 + -7z

Reorder the terms:
8 + -1 + 7z = 9z + 12 + -7z

Combine like terms: 8 + -1 = 7
7 + 7z = 9z + 12 + -7z

Reorder the terms:
7 + 7z = 12 + 9z + -7z

Combine like terms: 9z + -7z = 2z
7 + 7z = 12 + 2z

Solving
7 + 7z = 12 + 2z

Solving for variable 'z'.

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

Add '-2z' to each side of the equation.
7 + 7z + -2z = 12 + 2z + -2z

Combine like terms: 7z + -2z = 5z
7 + 5z = 12 + 2z + -2z

Combine like terms: 2z + -2z = 0
7 + 5z = 12 + 0
7 + 5z = 12

Add '-7' to each side of the equation.
7 + -7 + 5z = 12 + -7

Combine like terms: 7 + -7 = 0
0 + 5z = 12 + -7
5z = 12 + -7

Combine like terms: 12 + -7 = 5
5z = 5

Divide each side by '5'.
z = 1

Simplifying
z = 1

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