3x+131+7x+149=180

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Solution for 3x+131+7x+149=180 equation:


Simplifying
3x + 131 + 7x + 149 = 180

Reorder the terms:
131 + 149 + 3x + 7x = 180

Combine like terms: 131 + 149 = 280
280 + 3x + 7x = 180

Combine like terms: 3x + 7x = 10x
280 + 10x = 180

Solving
280 + 10x = 180

Solving for variable 'x'.

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

Add '-280' to each side of the equation.
280 + -280 + 10x = 180 + -280

Combine like terms: 280 + -280 = 0
0 + 10x = 180 + -280
10x = 180 + -280

Combine like terms: 180 + -280 = -100
10x = -100

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

Simplifying
x = -10

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