3x+2y+z=21

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Solution for 3x+2y+z=21 equation:


Simplifying
3x + 2y + z = 21

Solving
3x + 2y + z = 21

Solving for variable 'x'.

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

Add '-2y' to each side of the equation.
3x + 2y + -2y + z = 21 + -2y

Combine like terms: 2y + -2y = 0
3x + 0 + z = 21 + -2y
3x + z = 21 + -2y

Add '-1z' to each side of the equation.
3x + z + -1z = 21 + -2y + -1z

Combine like terms: z + -1z = 0
3x + 0 = 21 + -2y + -1z
3x = 21 + -2y + -1z

Divide each side by '3'.
x = 7 + -0.6666666667y + -0.3333333333z

Simplifying
x = 7 + -0.6666666667y + -0.3333333333z

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