7x-y+z=31

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Solution for 7x-y+z=31 equation:


Simplifying
7x + -1y + z = 31

Solving
7x + -1y + z = 31

Solving for variable 'x'.

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

Add 'y' to each side of the equation.
7x + -1y + y + z = 31 + y

Combine like terms: -1y + y = 0
7x + 0 + z = 31 + y
7x + z = 31 + y

Add '-1z' to each side of the equation.
7x + z + -1z = 31 + y + -1z

Combine like terms: z + -1z = 0
7x + 0 = 31 + y + -1z
7x = 31 + y + -1z

Divide each side by '7'.
x = 4.428571429 + 0.1428571429y + -0.1428571429z

Simplifying
x = 4.428571429 + 0.1428571429y + -0.1428571429z

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