X+x+80=400

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Solution for X+x+80=400 equation:


Simplifying
X + x + 80 = 400

Reorder the terms:
80 + X + x = 400

Solving
80 + X + x = 400

Solving for variable 'X'.

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

Add '-80' to each side of the equation.
80 + X + -80 + x = 400 + -80

Reorder the terms:
80 + -80 + X + x = 400 + -80

Combine like terms: 80 + -80 = 0
0 + X + x = 400 + -80
X + x = 400 + -80

Combine like terms: 400 + -80 = 320
X + x = 320

Add '-1x' to each side of the equation.
X + x + -1x = 320 + -1x

Combine like terms: x + -1x = 0
X + 0 = 320 + -1x
X = 320 + -1x

Simplifying
X = 320 + -1x

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