42-21x=63-7y

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Solution for 42-21x=63-7y equation:


Simplifying
42 + -21x = 63 + -7y

Solving
42 + -21x = 63 + -7y

Solving for variable 'x'.

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

Add '-42' to each side of the equation.
42 + -42 + -21x = 63 + -42 + -7y

Combine like terms: 42 + -42 = 0
0 + -21x = 63 + -42 + -7y
-21x = 63 + -42 + -7y

Combine like terms: 63 + -42 = 21
-21x = 21 + -7y

Divide each side by '-21'.
x = -1 + 0.3333333333y

Simplifying
x = -1 + 0.3333333333y

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