3(3x-4)-7(3x+2)=4(3x-5)
9x-12-21x+14=12x-5 9x-21x-12x=-5+12-14 -24x=-7 x=-24/-7 x=3,5
9х-12-21х-14=12x-20 9x - 12 - 21x - 14 -12x +20 = 0 -24x - 6 = 0 24x + 6 = 0 24x = - 6 x= - 0.25