3Z+4+10Z-5=90

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Solution for 3Z+4+10Z-5=90 equation: 


Simplifying
3Z + 4 + 10Z + -5 = 90

Reorder the terms:
4 + -5 + 3Z + 10Z = 90

Combine like terms: 4 + -5 = -1
-1 + 3Z + 10Z = 90

Combine like terms: 3Z + 10Z = 13Z
-1 + 13Z = 90

Solving
-1 + 13Z = 90

Solving for variable 'Z'.

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

Add '1' to each side of the equation.
-1 + 1 + 13Z = 90 + 1

Combine like terms: -1 + 1 = 0
0 + 13Z = 90 + 1
13Z = 90 + 1

Combine like terms: 90 + 1 = 91
13Z = 91

Divide each side by '13'.
Z = 7

Simplifying
Z = 7

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