4x-3y=-21

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Solution for 4x-3y=-21 equation: 


Simplifying
4x + -3y = -21

Solving
4x + -3y = -21

Solving for variable 'x'.

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

Add '3y' to each side of the equation.
4x + -3y + 3y = -21 + 3y

Combine like terms: -3y + 3y = 0
4x + 0 = -21 + 3y
4x = -21 + 3y

Divide each side by '4'.
x = -5.25 + 0.75y

Simplifying
x = -5.25 + 0.75y

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