105+105+x+x+x=180

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Solution for 105+105+x+x+x=180 equation: 


Simplifying
105 + 105 + x + x + x = 180

Combine like terms: 105 + 105 = 210
210 + x + x + x = 180

Combine like terms: x + x = 2x
210 + 2x + x = 180

Combine like terms: 2x + x = 3x
210 + 3x = 180

Solving
210 + 3x = 180

Solving for variable 'x'.

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

Add '-210' to each side of the equation.
210 + -210 + 3x = 180 + -210

Combine like terms: 210 + -210 = 0
0 + 3x = 180 + -210
3x = 180 + -210

Combine like terms: 180 + -210 = -30
3x = -30

Divide each side by '3'.
x = -10

Simplifying
x = -10

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