Question

6.4 (2-3y)=6 (0.8y-1)+6.8

Answer 1

6.4 (2-3y)=6 (0.8y-1)+6.8
6.4*2-6.4*3y=6*0.8y-6+6.8
12.8-19.2y=4.8y+0.8
19.2y+4.8y=12.8-0.8
24y=12
y=12:24
y=0.5

5)$(-50.4:(-5 frac{3}{5})+6.4)*14.4:(-3 frac{3}{5}) =$$(-50.4:(-5.6)+6.4)*14.4:(-3 .6) =$$(-50.4:(-5.6)+6.4)*14.4:(-3 .6) =(9+6.4) *(-4)=-4*15.4=$-61.6

6) -3.5*(-2.8*5.5+4.3*3.7)-2.6=-3.5*(-15.4+15.91)-2.6=-3.5*0.51-2.6=-1.785-2.6= -4.385

Answer 2

а как можно прочитать 5 задание