X+77=81

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Solution for X+77=81 equation: 


Simplifying
X + 77 = 81

Reorder the terms:
77 + X = 81

Solving
77 + X = 81

Solving for variable 'X'.

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

Add '-77' to each side of the equation.
77 + -77 + X = 81 + -77

Combine like terms: 77 + -77 = 0
0 + X = 81 + -77
X = 81 + -77

Combine like terms: 81 + -77 = 4
X = 4

Simplifying
X = 4

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