7z+27=5z-15

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Solution for 7z+27=5z-15 equation:


Simplifying
7z + 27 = 5z + -15

Reorder the terms:
27 + 7z = 5z + -15

Reorder the terms:
27 + 7z = -15 + 5z

Solving
27 + 7z = -15 + 5z

Solving for variable 'z'.

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

Add '-5z' to each side of the equation.
27 + 7z + -5z = -15 + 5z + -5z

Combine like terms: 7z + -5z = 2z
27 + 2z = -15 + 5z + -5z

Combine like terms: 5z + -5z = 0
27 + 2z = -15 + 0
27 + 2z = -15

Add '-27' to each side of the equation.
27 + -27 + 2z = -15 + -27

Combine like terms: 27 + -27 = 0
0 + 2z = -15 + -27
2z = -15 + -27

Combine like terms: -15 + -27 = -42
2z = -42

Divide each side by '2'.
z = -21

Simplifying
z = -21

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