bai 4 (2,0 diem) a,x +4/7 =11/7 b, x-4/15 =-3/10 27/09/2021 Bởi aikhanh bai 4 (2,0 diem) a,x +4/7 =11/7 b, x-4/15 =-3/10
Đáp án: a) `x + \frac{4}{7} = \frac{11}{7}` `x = \frac{11}{7} – \frac{4}{7}` `x = \frac{7}{7}` `x = 1` Vậy x = 1. b) `x – \frac{4}{15} = \frac{-3}{10}` `x = \frac{-3}{10} + \frac{4}{15}` `x = \frac{-1}{30}` Vậy `x = \frac{-1}{30}`. Chúc học tốt!!! Bình luận
Đáp án:
a)
`x + \frac{4}{7} = \frac{11}{7}`
`x = \frac{11}{7} – \frac{4}{7}`
`x = \frac{7}{7}`
`x = 1`
Vậy x = 1.
b)
`x – \frac{4}{15} = \frac{-3}{10}`
`x = \frac{-3}{10} + \frac{4}{15}`
`x = \frac{-1}{30}`
Vậy `x = \frac{-1}{30}`.
Chúc học tốt!!!
`a)“x+4/7=11/7`
`x=11/7-4/7`
`x=1`
`b)“x-4/15=-3/10`
`x=-3/10-4/15`
`x=-1/30`