90=3z+6+z+2

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Solution for 90=3z+6+z+2 equation: 


Simplifying
90 = 3z + 6 + z + 2

Reorder the terms:
90 = 6 + 2 + 3z + z

Combine like terms: 6 + 2 = 8
90 = 8 + 3z + z

Combine like terms: 3z + z = 4z
90 = 8 + 4z

Solving
90 = 8 + 4z

Solving for variable 'z'.

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

Add '-4z' to each side of the equation.
90 + -4z = 8 + 4z + -4z

Combine like terms: 4z + -4z = 0
90 + -4z = 8 + 0
90 + -4z = 8

Add '-90' to each side of the equation.
90 + -90 + -4z = 8 + -90

Combine like terms: 90 + -90 = 0
0 + -4z = 8 + -90
-4z = 8 + -90

Combine like terms: 8 + -90 = -82
-4z = -82

Divide each side by '-4'.
z = 20.5

Simplifying
z = 20.5

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