x+21=.75

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Solution for x+21=.75 equation: 


Simplifying
x + 21 = 0.75

Reorder the terms:
21 + x = 0.75

Solving
21 + x = 0.75

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + x = 0.75 + -21

Combine like terms: 21 + -21 = 0
0 + x = 0.75 + -21
x = 0.75 + -21

Combine like terms: 0.75 + -21 = -20.25
x = -20.25

Simplifying
x = -20.25

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