6z-21=-5+2z

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Solution for 6z-21=-5+2z equation:


Simplifying
6z + -21 = -5 + 2z

Reorder the terms:
-21 + 6z = -5 + 2z

Solving
-21 + 6z = -5 + 2z

Solving for variable 'z'.

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

Add '-2z' to each side of the equation.
-21 + 6z + -2z = -5 + 2z + -2z

Combine like terms: 6z + -2z = 4z
-21 + 4z = -5 + 2z + -2z

Combine like terms: 2z + -2z = 0
-21 + 4z = -5 + 0
-21 + 4z = -5

Add '21' to each side of the equation.
-21 + 21 + 4z = -5 + 21

Combine like terms: -21 + 21 = 0
0 + 4z = -5 + 21
4z = -5 + 21

Combine like terms: -5 + 21 = 16
4z = 16

Divide each side by '4'.
z = 4

Simplifying
z = 4

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