( 1 + 1/2 + 1/6 ) : ( 1/6 + 1/12 + 1/20 )
= ( 1 + 2/3 ) : ( 1/4 + 1/20 )
= 5/3 : 3/10
= 5/3 x 10/3
= 50/9
\(\left(1+\frac{1}{2}+\frac{1}{6}\right):\left(\frac{1}{6}+\frac{1}{12}+\frac{1}{20}\right)\)
=\(\frac{5}{3}:\frac{3}{10}\)
=\(\frac{50}{9}\)
( 1 + 1/2 + 1/6 ) : ( 1/6 + 1/12 + 1/20 )
= ( 1 + 2/3 ) : ( 1/4 + 1/20 )
= 5/3 : 3/10
= 5/3 x 10/3
= 50/9
\(\left(1+\frac{1}{2}+\frac{1}{6}\right):\left(\frac{1}{6}+\frac{1}{12}+\frac{1}{20}\right)\)
=\(\frac{5}{3}:\frac{3}{10}\)
=\(\frac{50}{9}\)
2*x+1/2*x + 6*x+1/6*x +12*x+1/12*x +20*x+1/20*x= 5.tìm x
2*x+1/2*x+6*x+1/6*x+12*x+1/12*x+20*x+1/20*x=5.Tim x
tinh bang cach thuan tien nhat
1/2+1/6+1/12+1/20
1/2+1/6+1/12+1/20+..........+1/9900
1/2+1/3+1/4+1/8+1/16
1/2+1/3+1/4+1/8+1/16+........+1/512
1/2 + 1/6 + 1/12 + 1/20 + 1/30
các bạn giải hộ mh bài này nhé
b1,
a,1/2 + 1/6 + 1/12 + 1/20 +...+ 1/9500
b, 3/2 - 5/6 - 7/12 - 9/20 - ....- 19/90
1/2+1/6+1/12+1/20+1/30+1/42
( 1/2 + 1/6 + 1/12 + 1/20+......+1/72) : X = 1/2+ 1/4
Ai nhanh mình tick cho.(Nhung phải kết bạn nữa nhé)
Câu 1: 1/2*4*6+1/4*6*8+1/6*8*10+1/8*10*12+1/10*12*14
Câu 2: 1+1/6+1/10+.....+1/90
Câu 3: 1/3+1/6+1/12+1/24+1/48
Câu 4:1/5+1/10+1/20+1/40+.....+1/1280
1/2 + 1/6 + 1/12 +1/20 = ?