X+30=x-30+x-40

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Solution for X+30=x-30+x-40 equation:


Simplifying
X + 30 = x + -30 + x + -40

Reorder the terms:
30 + X = x + -30 + x + -40

Reorder the terms:
30 + X = -30 + -40 + x + x

Combine like terms: -30 + -40 = -70
30 + X = -70 + x + x

Combine like terms: x + x = 2x
30 + X = -70 + 2x

Solving
30 + X = -70 + 2x

Solving for variable 'X'.

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

Add '-30' to each side of the equation.
30 + -30 + X = -70 + -30 + 2x

Combine like terms: 30 + -30 = 0
0 + X = -70 + -30 + 2x
X = -70 + -30 + 2x

Combine like terms: -70 + -30 = -100
X = -100 + 2x

Simplifying
X = -100 + 2x

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