Question

1/3x-3+1/4x+4=1/2x-12

Answer 1

$\frac{1}{3}x-3+ \frac{1}{4}x+4= \frac{1}{2}x-12 \\ \\ \frac{1}{3}x+ \frac{1}{4}x- \frac{1}{2}x=-12+3-4 \\ \\ \frac{4x+3x-2x}{12}= -13 \\ \\ 5x= -13*12 \\ \\ x= \frac{-156}{5}$

Espero que te sirva, salu2!!!!