4x=21-y

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Solution for 4x=21-y equation: 


Simplifying
4x = 21 + -1y

Solving
4x = 21 + -1y

Solving for variable 'x'.

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

Divide each side by '4'.
x = 5.25 + -0.25y

Simplifying
x = 5.25 + -0.25y

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