3.7а-2.5b-7.5b+0.3a+10 при а=-1.5, b=0.12 -1.6x+0.2y+2.6x-0.1-3.2y - вопрос №1920262372575031015012160226013212 от Hol0Ze5 03.03.2020 08:22

Question

Математика: 3.7а-2.5b-7.5b+0.3a+10 при а=-1.5, b=0.12 -1.6x+0.2y+2.6x-0.1-3.2y при х=1/2 y=-2/3

Hol0Ze5 · Answer

а) 3.7а-2.5b-7.5b+0.3a+10 = 4a-10b = 4*(-1.5)-10*0.12+10 = -6 - 1.2+10 = 2.8б) -1.6x+0.2y+2.6x-0.1-3.2y = х-3y-0.1 =  -  -0.1 =  = ...