2z+5z-8=13

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Solution for 2z+5z-8=13 equation: 


Simplifying
2z + 5z + -8 = 13

Reorder the terms:
-8 + 2z + 5z = 13

Combine like terms: 2z + 5z = 7z
-8 + 7z = 13

Solving
-8 + 7z = 13

Solving for variable 'z'.

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

Add '8' to each side of the equation.
-8 + 8 + 7z = 13 + 8

Combine like terms: -8 + 8 = 0
0 + 7z = 13 + 8
7z = 13 + 8

Combine like terms: 13 + 8 = 21
7z = 21

Divide each side by '7'.
z = 3

Simplifying
z = 3

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