X+12=3r-4

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Solution for X+12=3r-4 equation: 


Simplifying
X + 12 = 3r + -4

Reorder the terms:
12 + X = 3r + -4

Reorder the terms:
12 + X = -4 + 3r

Solving
12 + X = -4 + 3r

Solving for variable 'X'.

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

Add '-12' to each side of the equation.
12 + -12 + X = -4 + -12 + 3r

Combine like terms: 12 + -12 = 0
0 + X = -4 + -12 + 3r
X = -4 + -12 + 3r

Combine like terms: -4 + -12 = -16
X = -16 + 3r

Simplifying
X = -16 + 3r

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