120=z+15+9+13+2

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Solution for 120=z+15+9+13+2 equation: 


Simplifying
120 = z + 15 + 9 + 13 + 2

Reorder the terms:
120 = 15 + 9 + 13 + 2 + z

Combine like terms: 15 + 9 = 24
120 = 24 + 13 + 2 + z

Combine like terms: 24 + 13 = 37
120 = 37 + 2 + z

Combine like terms: 37 + 2 = 39
120 = 39 + z

Solving
120 = 39 + z

Solving for variable 'z'.

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

Add '-1z' to each side of the equation.
120 + -1z = 39 + z + -1z

Combine like terms: z + -1z = 0
120 + -1z = 39 + 0
120 + -1z = 39

Add '-120' to each side of the equation.
120 + -120 + -1z = 39 + -120

Combine like terms: 120 + -120 = 0
0 + -1z = 39 + -120
-1z = 39 + -120

Combine like terms: 39 + -120 = -81
-1z = -81

Divide each side by '-1'.
z = 81

Simplifying
z = 81

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