7z+13=5z-5

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Solution for 7z+13=5z-5 equation:


Simplifying
7z + 13 = 5z + -5

Reorder the terms:
13 + 7z = 5z + -5

Reorder the terms:
13 + 7z = -5 + 5z

Solving
13 + 7z = -5 + 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.
13 + 7z + -5z = -5 + 5z + -5z

Combine like terms: 7z + -5z = 2z
13 + 2z = -5 + 5z + -5z

Combine like terms: 5z + -5z = 0
13 + 2z = -5 + 0
13 + 2z = -5

Add '-13' to each side of the equation.
13 + -13 + 2z = -5 + -13

Combine like terms: 13 + -13 = 0
0 + 2z = -5 + -13
2z = -5 + -13

Combine like terms: -5 + -13 = -18
2z = -18

Divide each side by '2'.
z = -9

Simplifying
z = -9

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