3x+19+5x-9+4x+21=180

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Solution for 3x+19+5x-9+4x+21=180 equation: 


Simplifying
3x + 19 + 5x + -9 + 4x + 21 = 180

Reorder the terms:
19 + -9 + 21 + 3x + 5x + 4x = 180

Combine like terms: 19 + -9 = 10
10 + 21 + 3x + 5x + 4x = 180

Combine like terms: 10 + 21 = 31
31 + 3x + 5x + 4x = 180

Combine like terms: 3x + 5x = 8x
31 + 8x + 4x = 180

Combine like terms: 8x + 4x = 12x
31 + 12x = 180

Solving
31 + 12x = 180

Solving for variable 'x'.

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

Add '-31' to each side of the equation.
31 + -31 + 12x = 180 + -31

Combine like terms: 31 + -31 = 0
0 + 12x = 180 + -31
12x = 180 + -31

Combine like terms: 180 + -31 = 149
12x = 149

Divide each side by '12'.
x = 12.41666667

Simplifying
x = 12.41666667

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