Question

Помогите!! Упростите выражение:
-2,4(2,5a-1,5b)+0,5(1,8b+5,6a)

Answer 1

-2,4(2,5a-1,5b)+0,5(1,8b+5,6a)=-2.4*2.5а+2.4*1.5в+0.5*1.8в+0.5*5.6а=0.5*4(-0.6*5а+1.4а)+0.5*6(0.4*3в+0.3в)=2*(-3а+1.4а)+3*(1.2в+0.3в)=-3.2а+4.5в