3+4x=-y

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Solution for 3+4x=-y equation:


Simplifying
3 + 4x = -1y

Solving
3 + 4x = -1y

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 4x = -3 + -1y

Combine like terms: 3 + -3 = 0
0 + 4x = -3 + -1y
4x = -3 + -1y

Divide each side by '4'.
x = -0.75 + -0.25y

Simplifying
x = -0.75 + -0.25y

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