20+X+87=x+99

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Solution for 20+X+87=x+99 equation:


Simplifying
20 + X + 87 = x + 99

Reorder the terms:
20 + 87 + X = x + 99

Combine like terms: 20 + 87 = 107
107 + X = x + 99

Reorder the terms:
107 + X = 99 + x

Solving
107 + X = 99 + x

Solving for variable 'X'.

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

Add '-107' to each side of the equation.
107 + -107 + X = 99 + -107 + x

Combine like terms: 107 + -107 = 0
0 + X = 99 + -107 + x
X = 99 + -107 + x

Combine like terms: 99 + -107 = -8
X = -8 + x

Simplifying
X = -8 + x

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