-65+12X=40+7X

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Solution for -65+12X=40+7X equation: 


Simplifying
-65 + 12X = 40 + 7X

Solving
-65 + 12X = 40 + 7X

Solving for variable 'X'.

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

Add '-7X' to each side of the equation.
-65 + 12X + -7X = 40 + 7X + -7X

Combine like terms: 12X + -7X = 5X
-65 + 5X = 40 + 7X + -7X

Combine like terms: 7X + -7X = 0
-65 + 5X = 40 + 0
-65 + 5X = 40

Add '65' to each side of the equation.
-65 + 65 + 5X = 40 + 65

Combine like terms: -65 + 65 = 0
0 + 5X = 40 + 65
5X = 40 + 65

Combine like terms: 40 + 65 = 105
5X = 105

Divide each side by '5'.
X = 21

Simplifying
X = 21

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