21=y+2x

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Solution for 21=y+2x equation:


Simplifying
21 = y + 2x

Reorder the terms:
21 = 2x + y

Solving
21 = 2x + y

Solving for variable 'x'.

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

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

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

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

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

Divide each side by '-2'.
x = 10.5 + -0.5y

Simplifying
x = 10.5 + -0.5y

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