8=z-7

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Solution for 8=z-7 equation:


Simplifying
8 = z + -7

Reorder the terms:
8 = -7 + z

Solving
8 = -7 + 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.
8 + -1z = -7 + z + -1z

Combine like terms: z + -1z = 0
8 + -1z = -7 + 0
8 + -1z = -7

Add '-8' to each side of the equation.
8 + -8 + -1z = -7 + -8

Combine like terms: 8 + -8 = 0
0 + -1z = -7 + -8
-1z = -7 + -8

Combine like terms: -7 + -8 = -15
-1z = -15

Divide each side by '-1'.
z = 15

Simplifying
z = 15

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