8-z=20-7z

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Solution for 8-z=20-7z equation:


Simplifying
8 + -1z = 20 + -7z

Solving
8 + -1z = 20 + -7z

Solving for variable 'z'.

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

Add '7z' to each side of the equation.
8 + -1z + 7z = 20 + -7z + 7z

Combine like terms: -1z + 7z = 6z
8 + 6z = 20 + -7z + 7z

Combine like terms: -7z + 7z = 0
8 + 6z = 20 + 0
8 + 6z = 20

Add '-8' to each side of the equation.
8 + -8 + 6z = 20 + -8

Combine like terms: 8 + -8 = 0
0 + 6z = 20 + -8
6z = 20 + -8

Combine like terms: 20 + -8 = 12
6z = 12

Divide each side by '6'.
z = 2

Simplifying
z = 2

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