2X+7X=81-9

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Solution for 2X+7X=81-9 equation: 


Simplifying
2X + 7X = 81 + -9

Combine like terms: 2X + 7X = 9X
9X = 81 + -9

Combine like terms: 81 + -9 = 72
9X = 72

Solving
9X = 72

Solving for variable 'X'.

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

Divide each side by '9'.
X = 8

Simplifying
X = 8

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