7z-4=z+20

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Solution for 7z-4=z+20 equation:


Simplifying
7z + -4 = z + 20

Reorder the terms:
-4 + 7z = z + 20

Reorder the terms:
-4 + 7z = 20 + z

Solving
-4 + 7z = 20 + z

Solving for variable 'z'.

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

Add '-1z' to each side of the equation.
-4 + 7z + -1z = 20 + z + -1z

Combine like terms: 7z + -1z = 6z
-4 + 6z = 20 + z + -1z

Combine like terms: z + -1z = 0
-4 + 6z = 20 + 0
-4 + 6z = 20

Add '4' to each side of the equation.
-4 + 4 + 6z = 20 + 4

Combine like terms: -4 + 4 = 0
0 + 6z = 20 + 4
6z = 20 + 4

Combine like terms: 20 + 4 = 24
6z = 24

Divide each side by '6'.
z = 4

Simplifying
z = 4

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