40+40+z=180

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Solution for 40+40+z=180 equation: 


Simplifying
40 + 40 + z = 180

Combine like terms: 40 + 40 = 80
80 + z = 180

Solving
80 + z = 180

Solving for variable 'z'.

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

Add '-80' to each side of the equation.
80 + -80 + z = 180 + -80

Combine like terms: 80 + -80 = 0
0 + z = 180 + -80
z = 180 + -80

Combine like terms: 180 + -80 = 100
z = 100

Simplifying
z = 100

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