12x-3y+21=0

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Solution for 12x-3y+21=0 equation:


Simplifying
12x + -3y + 21 = 0

Reorder the terms:
21 + 12x + -3y = 0

Solving
21 + 12x + -3y = 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 + 12x + -21 + -3y = 0 + -21

Reorder the terms:
21 + -21 + 12x + -3y = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 12x + -3y = 0 + -21
12x + -3y = 0 + -21

Combine like terms: 0 + -21 = -21
12x + -3y = -21

Add '3y' to each side of the equation.
12x + -3y + 3y = -21 + 3y

Combine like terms: -3y + 3y = 0
12x + 0 = -21 + 3y
12x = -21 + 3y

Divide each side by '12'.
x = -1.75 + 0.25y

Simplifying
x = -1.75 + 0.25y

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