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3x\times \frac{2}{3}+3\times 4=5
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 3,x,3x.
2x+3\times 4=5
Multiply 3 and \frac{2}{3} to get 2.
2x+12=5
Multiply 3 and 4 to get 12.
2x=5-12
Subtract 12 from both sides.
2x=-7
Subtract 12 from 5 to get -7.
x=\frac{-7}{2}
Divide both sides by 2.
x=-\frac{7}{2}
Fraction \frac{-7}{2} can be rewritten as -\frac{7}{2} by extracting the negative sign.