X+Y+3z=12

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Solution for X+Y+3z=12 equation:


Simplifying
X + Y + 3z = 12

Solving
X + Y + 3z = 12

Solving for variable 'X'.

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

Add '-1Y' to each side of the equation.
X + Y + -1Y + 3z = 12 + -1Y

Combine like terms: Y + -1Y = 0
X + 0 + 3z = 12 + -1Y
X + 3z = 12 + -1Y

Add '-3z' to each side of the equation.
X + 3z + -3z = 12 + -1Y + -3z

Combine like terms: 3z + -3z = 0
X + 0 = 12 + -1Y + -3z
X = 12 + -1Y + -3z

Simplifying
X = 12 + -1Y + -3z

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