НАЙДИТЕ КОРЕНЬ СРОЧНООО!
2.3(y-0.4)-0.26(y+2)=6.64-2y 2.3y-0.92-0.26y-0.52=6.64-2y 2.3y-0.26y+2y=0.92+0.52+6.64 4.04y=8.08 |:2 y=2 Ответ: 2