Chịu thôi ! Ai mà giúp được . Xin lỗi nha !
Bài này là vầy nè bạn!
A=(1/2+89/90)+(5/6+71/72)+(11/12+41/42)+(19/20+29/30)
A= 67/45 + 131/72 + 53/28 + 23/12
A= 1993/280
Tính nhanh :
a. 5/6+11/12+19/20+29/30+41/42+55/56+71/72+89/90
b. 1/2+5/6+11/12+19/20+29/30+41/42+55/56+71/72+89/90+109/110
GIÚP MK VỚI AI NHANH MK TICK
A=1/2+5/6+11/12+19/20+29/30+41/42+55/56+71/72+89/90 = ?
A= 1/2+5/6+11/12+19/20+29/30+41/42+55/56+71/72+89/90
A= 1/2+5/6+11/12+19/20+29/30+41/42+55/56+71/72+89/90
1/2+5/6+11/12+19/20+29/30+41/42+55/56+71/72+89/90
Tính nhanh:
1/2 + 5/6 + 11/12 + 19/20 + 29/30 + 41/42 + 55/56 + 71/72 + 89/90
Tính nhanh : A =1/2 + 5/6 + 11/12 + 19/20 + 29/30 + 41/42 + 55/56 + 71/72 + 89/90
Tính nhanh: A = 1/2 + 5/6 + 11/12 + 19/20 + 29/30 + 41/42 + 55/56 + 71/72 + 89/90
1/2+5/6+11/12+19/20+29/30+41/42+55/56+71/72+89/90+109/110
