8z-21=-19+7z

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Solution for 8z-21=-19+7z equation:


Simplifying
8z + -21 = -19 + 7z

Reorder the terms:
-21 + 8z = -19 + 7z

Solving
-21 + 8z = -19 + 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.
-21 + 8z + -7z = -19 + 7z + -7z

Combine like terms: 8z + -7z = 1z
-21 + 1z = -19 + 7z + -7z

Combine like terms: 7z + -7z = 0
-21 + 1z = -19 + 0
-21 + 1z = -19

Add '21' to each side of the equation.
-21 + 21 + 1z = -19 + 21

Combine like terms: -21 + 21 = 0
0 + 1z = -19 + 21
1z = -19 + 21

Combine like terms: -19 + 21 = 2
1z = 2

Divide each side by '1'.
z = 2

Simplifying
z = 2

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