How do you solve and write the following in interval notation: x+3+12x< -3+5x+48?

Solution set with interval notation $x : \left(- \infty , \frac{21}{4}\right)$
$x + 3 + 12 x < - 3 + 5 x + 48 \mathmr{and} 13 x + 3 < 5 x + 45 \mathmr{and} 13 x - 5 x < 42 \mathmr{and} 8 x < 42 \mathmr{and} 4 x < 21 \mathmr{and} x < \frac{21}{4}$ Solution set with interval notation $x : \left(- \infty , \frac{21}{4}\right)$[Ans]