2X+6=x+21

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Solution for 2X+6=x+21 equation:


Simplifying
2X + 6 = x + 21

Reorder the terms:
6 + 2X = x + 21

Reorder the terms:
6 + 2X = 21 + x

Solving
6 + 2X = 21 + x

Solving for variable 'X'.

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

Add '-6' to each side of the equation.
6 + -6 + 2X = 21 + -6 + x

Combine like terms: 6 + -6 = 0
0 + 2X = 21 + -6 + x
2X = 21 + -6 + x

Combine like terms: 21 + -6 = 15
2X = 15 + x

Divide each side by '2'.
X = 7.5 + 0.5x

Simplifying
X = 7.5 + 0.5x

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