Tính:
\(\left(\frac{1648}{1751}+\frac{131313}{686868}\right):\left(\frac{1648}{1751}-\frac{131313}{686868}\right)\)
Tính nhanh
a) A= (3/5 + 3/7 + 3/11 - 3/37) : 4/5 + 4/7 + 4/11 - 4/37
b) B= (1648/1751 - 131313/686868) : (1648/1751 + 131313/686868)
Tính giá trị
B=(1648/1751+131313/686868):(164816/175117+1313/6868)
\(B=(1-\frac{1}{21}).(1-\frac{1}{36})...(1-\frac{1}{1326})\)
\(C=(1+\frac{1}{1.3}).(1+\frac{1}{2.4}).(1+\frac{1}{3.5})...(1+\frac{1}{99.100})\)
\(D=(\frac{810}{167}-\frac{675}{225}):(\frac{810}{167}+\frac{675}{225})\)
\(E=(\frac{1648}{1751}+\frac{131313}{686868}):(\frac{1648}{1751}-\frac{131313}{686868})\)
\(F=(\frac{1248}{1391}+\frac{212121}{656565}):(\frac{27}{13}.3)\)
Ai nhanh cho full đúng ,đang cần gấp!!!!!!
B= 70.( 131313/565656 + 131313/727272 + 131313/909090)
Tính B: Có cách làm !
Tính 70\(\times\)(\(\frac{131313}{565656}+\frac{131313}{727272}+\frac{131313}{909090}\))
131313/151515 + 131313/353535 + 131313/636363 + 131313/999999 = ?
2/3-70.10/11.(131313/151515+131313/353535+131313/636363+131313/999999)=-5
131313 +131313+131313+131313
151515+353535+636363+999999