.75X+21=12

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Solution for .75X+21=12 equation: 


Simplifying
0.75X + 21 = 12

Reorder the terms:
21 + 0.75X = 12

Solving
21 + 0.75X = 12

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 + 0.75X = 12 + -21

Combine like terms: 21 + -21 = 0
0 + 0.75X = 12 + -21
0.75X = 12 + -21

Combine like terms: 12 + -21 = -9
0.75X = -9

Divide each side by '0.75'.
X = -12

Simplifying
X = -12

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