2x+x+(x-40)=300

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Solution for 2x+x+(x-40)=300 equation:


Simplifying
2x + x + (x + -40) = 300

Reorder the terms:
2x + x + (-40 + x) = 300

Remove parenthesis around (-40 + x)
2x + x + -40 + x = 300

Reorder the terms:
-40 + 2x + x + x = 300

Combine like terms: 2x + x = 3x
-40 + 3x + x = 300

Combine like terms: 3x + x = 4x
-40 + 4x = 300

Solving
-40 + 4x = 300

Solving for variable 'x'.

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

Add '40' to each side of the equation.
-40 + 40 + 4x = 300 + 40

Combine like terms: -40 + 40 = 0
0 + 4x = 300 + 40
4x = 300 + 40

Combine like terms: 300 + 40 = 340
4x = 340

Divide each side by '4'.
x = 85

Simplifying
x = 85

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