`4/5+3/7`
`=(4xx7)/(5xx7)+(3xx5)/(7xx5)`
`=(28)/(35)+(15)/(35)`
`=(28+15)/(35)`
`=(43)/(35)`
\(\dfrac{4}{5}\) + \(\dfrac{3}{7}\) = \(\dfrac{28}{35}\) + \(\dfrac{15}{35}\) = \(\dfrac{45}{35}\)
`4/5+3/7`
`=(4xx7)/(5xx7)+(3xx5)/(7xx5)`
`=(28)/(35)+(15)/(35)`
`=(28+15)/(35)`
`=(43)/(35)`
\(\dfrac{4}{5}\) + \(\dfrac{3}{7}\) = \(\dfrac{28}{35}\) + \(\dfrac{15}{35}\) = \(\dfrac{45}{35}\)
2 : x - \(\dfrac{1}{3}\) = \(\dfrac{2}{5}\)
\(\dfrac{9}{15}+\dfrac{30}{100}+2=?\)
a) 3/7 + 4/5 b) 7/15 + 2/5
Tính theo mẫu :
Mẫu : 13/21 + 5/7 = 13/21 + 5 x 3 / 7 x 3 = 13/21 + 15/21 = 28/21
26/81 + 4/27
5/64 + 7/8
1.Tính tổng a)5/6 + 1/2. b)7/8 + 1/4. c)5/9 + 3/7 Bài 2: Điền dấu >,
Bài 1:Tính
a) 5/12+3/4+1/3= b) 4/9+25/18+5/6=
a, 3/5 + 11/15 b, 3/4 + 5/6
a, 3/5 + 11/15 b, 3/4 + 5/6
Tính :
2/5 + 4/7
3/5 + 4/3
( Chi tiết ra giùm vs ạ )
kết quả của phép tính 2/3 +1/5+4/15=