X+15=2X+3

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Solution for X+15=2X+3 equation:


Simplifying
X + 15 = 2X + 3

Reorder the terms:
15 + X = 2X + 3

Reorder the terms:
15 + X = 3 + 2X

Solving
15 + X = 3 + 2X

Solving for variable 'X'.

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

Add '-2X' to each side of the equation.
15 + X + -2X = 3 + 2X + -2X

Combine like terms: X + -2X = -1X
15 + -1X = 3 + 2X + -2X

Combine like terms: 2X + -2X = 0
15 + -1X = 3 + 0
15 + -1X = 3

Add '-15' to each side of the equation.
15 + -15 + -1X = 3 + -15

Combine like terms: 15 + -15 = 0
0 + -1X = 3 + -15
-1X = 3 + -15

Combine like terms: 3 + -15 = -12
-1X = -12

Divide each side by '-1'.
X = 12

Simplifying
X = 12

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