x+(40+x)+2x=280

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Solution for x+(40+x)+2x=280 equation:


Simplifying
x + (40 + x) + 2x = 280

Remove parenthesis around (40 + x)
x + 40 + x + 2x = 280

Reorder the terms:
40 + x + x + 2x = 280

Combine like terms: x + x = 2x
40 + 2x + 2x = 280

Combine like terms: 2x + 2x = 4x
40 + 4x = 280

Solving
40 + 4x = 280

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 = 280 + -40

Combine like terms: 40 + -40 = 0
0 + 4x = 280 + -40
4x = 280 + -40

Combine like terms: 280 + -40 = 240
4x = 240

Divide each side by '4'.
x = 60

Simplifying
x = 60

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