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3=4+3x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 3x, the least common multiple of 1x,3x.
4+3x=3
Swap sides so that all variable terms are on the left hand side.
3x=3-4
Subtract 4 from both sides.
3x=-1
Subtract 4 from 3 to get -1.
x=\frac{-1}{3}
Divide both sides by 3.
x=-\frac{1}{3}
Fraction \frac{-1}{3} can be rewritten as -\frac{1}{3} by extracting the negative sign.