8z-7=-15+9z

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Solution for 8z-7=-15+9z equation:


Simplifying
8z + -7 = -15 + 9z

Reorder the terms:
-7 + 8z = -15 + 9z

Solving
-7 + 8z = -15 + 9z

Solving for variable 'z'.

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

Add '-9z' to each side of the equation.
-7 + 8z + -9z = -15 + 9z + -9z

Combine like terms: 8z + -9z = -1z
-7 + -1z = -15 + 9z + -9z

Combine like terms: 9z + -9z = 0
-7 + -1z = -15 + 0
-7 + -1z = -15

Add '7' to each side of the equation.
-7 + 7 + -1z = -15 + 7

Combine like terms: -7 + 7 = 0
0 + -1z = -15 + 7
-1z = -15 + 7

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

Divide each side by '-1'.
z = 8

Simplifying
z = 8

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