(12X-5X).4=252

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Solution for (12X-5X).4=252 equation: 


Simplifying
(12X + -5X) * 0.4 = 252

Combine like terms: 12X + -5X = 7X
(7X) * 0.4 = 252

Remove parenthesis around (7X)
7X * 0.4 = 252

Reorder the terms for easier multiplication:
7 * 0.4X = 252

Multiply 7 * 0.4
2.8X = 252

Solving
2.8X = 252

Solving for variable 'X'.

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

Divide each side by '2.8'.
X = 90

Simplifying
X = 90

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