X+2Y+21=0

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Solution for X+2Y+21=0 equation:


Simplifying
X + 2Y + 21 = 0

Reorder the terms:
21 + X + 2Y = 0

Solving
21 + X + 2Y = 0

Solving for variable 'X'.

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

Add '-21' to each side of the equation.
21 + X + -21 + 2Y = 0 + -21

Reorder the terms:
21 + -21 + X + 2Y = 0 + -21

Combine like terms: 21 + -21 = 0
0 + X + 2Y = 0 + -21
X + 2Y = 0 + -21

Combine like terms: 0 + -21 = -21
X + 2Y = -21

Add '-2Y' to each side of the equation.
X + 2Y + -2Y = -21 + -2Y

Combine like terms: 2Y + -2Y = 0
X + 0 = -21 + -2Y
X = -21 + -2Y

Simplifying
X = -21 + -2Y

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