45+15+x=80

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Solution for 45+15+x=80 equation: 


Simplifying
45 + 15 + x = 80

Combine like terms: 45 + 15 = 60
60 + x = 80

Solving
60 + x = 80

Solving for variable 'x'.

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

Add '-60' to each side of the equation.
60 + -60 + x = 80 + -60

Combine like terms: 60 + -60 = 0
0 + x = 80 + -60
x = 80 + -60

Combine like terms: 80 + -60 = 20
x = 20

Simplifying
x = 20

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