2,3х+(14+9х)=5х+13 срочно
2,3х+(14+9х)=5х+13 2,3x+14+9x=5x+13 11,3x+14=5x+13 11,3x-5x=13-14 6,3x=-1 x=-1:6,3 x= -10/63
11.3x + 14 = 5x+13 6.3x = -1 x = -0.1587