21=3y+1x

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Solution for 21=3y+1x equation:


Simplifying
21 = 3y + 1x

Reorder the terms:
21 = 1x + 3y

Solving
21 = 1x + 3y

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
21 + -1x = 1x + -1x + 3y

Combine like terms: 1x + -1x = 0
21 + -1x = 0 + 3y
21 + -1x = 3y

Add '-21' to each side of the equation.
21 + -21 + -1x = -21 + 3y

Combine like terms: 21 + -21 = 0
0 + -1x = -21 + 3y
-1x = -21 + 3y

Divide each side by '-1'.
x = 21 + -3y

Simplifying
x = 21 + -3y

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