z+7=5z-9

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Solution for z+7=5z-9 equation:


Simplifying
z + 7 = 5z + -9

Reorder the terms:
7 + z = 5z + -9

Reorder the terms:
7 + z = -9 + 5z

Solving
7 + z = -9 + 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.
7 + z + -5z = -9 + 5z + -5z

Combine like terms: z + -5z = -4z
7 + -4z = -9 + 5z + -5z

Combine like terms: 5z + -5z = 0
7 + -4z = -9 + 0
7 + -4z = -9

Add '-7' to each side of the equation.
7 + -7 + -4z = -9 + -7

Combine like terms: 7 + -7 = 0
0 + -4z = -9 + -7
-4z = -9 + -7

Combine like terms: -9 + -7 = -16
-4z = -16

Divide each side by '-4'.
z = 4

Simplifying
z = 4

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