7-21x=3y

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Solution for 7-21x=3y equation: 


Simplifying
7 + -21x = 3y

Solving
7 + -21x = 3y

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + -21x = -7 + 3y

Combine like terms: 7 + -7 = 0
0 + -21x = -7 + 3y
-21x = -7 + 3y

Divide each side by '-21'.
x = 0.3333333333 + -0.1428571429y

Simplifying
x = 0.3333333333 + -0.1428571429y

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