7z+15=6z-15

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Solution for 7z+15=6z-15 equation:


Simplifying
7z + 15 = 6z + -15

Reorder the terms:
15 + 7z = 6z + -15

Reorder the terms:
15 + 7z = -15 + 6z

Solving
15 + 7z = -15 + 6z

Solving for variable 'z'.

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

Add '-6z' to each side of the equation.
15 + 7z + -6z = -15 + 6z + -6z

Combine like terms: 7z + -6z = 1z
15 + 1z = -15 + 6z + -6z

Combine like terms: 6z + -6z = 0
15 + 1z = -15 + 0
15 + 1z = -15

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

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

Combine like terms: -15 + -15 = -30
1z = -30

Divide each side by '1'.
z = -30

Simplifying
z = -30

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