x+66=21

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Solution for x+66=21 equation: 


Simplifying
x + 66 = 21

Reorder the terms:
66 + x = 21

Solving
66 + x = 21

Solving for variable 'x'.

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

Add '-66' to each side of the equation.
66 + -66 + x = 21 + -66

Combine like terms: 66 + -66 = 0
0 + x = 21 + -66
x = 21 + -66

Combine like terms: 21 + -66 = -45
x = -45

Simplifying
x = -45

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