12=1+X+3

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Solution for 12=1+X+3 equation:


Simplifying
12 = 1 + X + 3

Reorder the terms:
12 = 1 + 3 + X

Combine like terms: 1 + 3 = 4
12 = 4 + X

Solving
12 = 4 + X

Solving for variable 'X'.

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

Add '-1X' to each side of the equation.
12 + -1X = 4 + X + -1X

Combine like terms: X + -1X = 0
12 + -1X = 4 + 0
12 + -1X = 4

Add '-12' to each side of the equation.
12 + -12 + -1X = 4 + -12

Combine like terms: 12 + -12 = 0
0 + -1X = 4 + -12
-1X = 4 + -12

Combine like terms: 4 + -12 = -8
-1X = -8

Divide each side by '-1'.
X = 8

Simplifying
X = 8

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