(2x-3x)+(2x+3x)=81

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Solution for (2x-3x)+(2x+3x)=81 equation: 


Simplifying
(2x + -3x) + (2x + 3x) = 81

Combine like terms: 2x + -3x = -1x
(-1x) + (2x + 3x) = 81
(-1x) + (2x + 3x) = 81

Combine like terms: 2x + 3x = 5x
(-1x) + (5x) = 81
(-1x) + (5x) = 81

Combine like terms: (-1x) + (5x) = 4x
4x = 81

Solving
4x = 81

Solving for variable 'x'.

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

Divide each side by '4'.
x = 20.25

Simplifying
x = 20.25

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