-8x+7y+z=21

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Solution for -8x+7y+z=21 equation:


Simplifying
-8x + 7y + z = 21

Solving
-8x + 7y + z = 21

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.
-8x + 7y + -7y + z = 21 + -7y

Combine like terms: 7y + -7y = 0
-8x + 0 + z = 21 + -7y
-8x + z = 21 + -7y

Add '-1z' to each side of the equation.
-8x + z + -1z = 21 + -7y + -1z

Combine like terms: z + -1z = 0
-8x + 0 = 21 + -7y + -1z
-8x = 21 + -7y + -1z

Divide each side by '-8'.
x = -2.625 + 0.875y + 0.125z

Simplifying
x = -2.625 + 0.875y + 0.125z

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