X+7y+4z=28

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Solution for X+7y+4z=28 equation:


Simplifying
X + 7y + 4z = 28

Solving
X + 7y + 4z = 28

Solving for variable 'X'.

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

Add '-7y' to each side of the equation.
X + 7y + -7y + 4z = 28 + -7y

Combine like terms: 7y + -7y = 0
X + 0 + 4z = 28 + -7y
X + 4z = 28 + -7y

Add '-4z' to each side of the equation.
X + 4z + -4z = 28 + -7y + -4z

Combine like terms: 4z + -4z = 0
X + 0 = 28 + -7y + -4z
X = 28 + -7y + -4z

Simplifying
X = 28 + -7y + -4z

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