Question

a) {(-7/20-9/30-11/40)x[-1,(3)]-0.0(5)} : 0,(4)
Este ex 22/35 din culegerea de cls 7 a .. daca il gasiti ... URGENT punctul a

Answer 1

1,(3)=(13-1)/9=12/9=4/3
0,0(5)=5/90=1/18
0,(4)=4/9
{(-7/20-9/30-11/40)x[-1,(3)]-0.0(5)} : 0,(4) =
=[(-7/20-3/10-11/40)x(-4/3)-5/9] : 4/9 =
=[(-14-12-11)/40x(-4/3)-5/9] ×9/4 =
=[(-37/40)x(-4/3)-5/9] ×9/4 =
=(37/30-5/9) ×9/4 =
=(111-50)/90 ×9/4 =
=61/10 ×1/4 =
=61/40=1,525

Answer 2

1,(3)=(13-1)/9=12/9=4/3 0,0(5)=5/90=1/18 0,(4)=4/9 {(-7/20-9/30-11/40)x[-1,(3)]-0.0(5)} : 0,(4) = =[(-7/20-3/10-11/40)x(-4/3)-5/9] : 4/9 = =[(-14-12-11)/40x(-4/3)-5/9] ×9/4 = =[(-37/40)x(-4/3)-5/9] ×9/4 = =(37/30-5/9) ×9/4 = =(111-50)/90 ×9/4 = =61/10 ×1/4 = =61/40=1,525