4x-2y-5z=21

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Solution for 4x-2y-5z=21 equation:


Simplifying
4x + -2y + -5z = 21

Solving
4x + -2y + -5z = 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.
4x + -2y + 2y + -5z = 21 + 2y

Combine like terms: -2y + 2y = 0
4x + 0 + -5z = 21 + 2y
4x + -5z = 21 + 2y

Add '5z' to each side of the equation.
4x + -5z + 5z = 21 + 2y + 5z

Combine like terms: -5z + 5z = 0
4x + 0 = 21 + 2y + 5z
4x = 21 + 2y + 5z

Divide each side by '4'.
x = 5.25 + 0.5y + 1.25z

Simplifying
x = 5.25 + 0.5y + 1.25z

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