4X+77=21

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Solution for 4X+77=21 equation: 


Simplifying
4X + 77 = 21

Reorder the terms:
77 + 4X = 21

Solving
77 + 4X = 21

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 + 4X = 21 + -77

Combine like terms: 77 + -77 = 0
0 + 4X = 21 + -77
4X = 21 + -77

Combine like terms: 21 + -77 = -56
4X = -56

Divide each side by '4'.
X = -14

Simplifying
X = -14

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