Solve for x
x\neq -\frac{2}{5}
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3\times 4-12=0
Variable x cannot be equal to -\frac{2}{5} since division by zero is not defined. Multiply both sides of the equation by 3\left(5x+2\right), the least common multiple of 5x+2,15x+6.
12-12=0
Multiply 3 and 4 to get 12.
0=0
Subtract 12 from 12 to get 0.
\text{true}
Compare 0 and 0.
x\in \mathrm{R}
This is true for any x.
x\in \mathrm{R}\setminus -\frac{2}{5}
Variable x cannot be equal to -\frac{2}{5}.
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