2X+5X=21

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Solution for 2X+5X=21 equation: 


Simplifying
2X + 5X = 21

Combine like terms: 2X + 5X = 7X
7X = 21

Solving
7X = 21

Solving for variable 'X'.

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

Divide each side by '7'.
X = 3

Simplifying
X = 3

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