Question

\(\left(\frac{-1}{5}+\frac{3}{12}\right)+\frac{-3}{4}\)              

giúp mình nha . Cảm ơn !

Answer 1

\(\left(\frac{-1}{5}+\frac{3}{12}\right)+\frac{-3}{4}\)

\(=\left(\frac{-1}{5}+\frac{1}{4}\right)+\frac{-3}{4}\)

\(=\frac{-1}{5}+\frac{1}{4}+\frac{-3}{4}\)

\(=\frac{-1}{5}+\frac{-1}{2}\)

\(=\frac{-2}{10}+\frac{-5}{10}\)

\(=\frac{-7}{10}\)

Answer 2

de bam may la ra

Answer 3

chịu  .. nha

Answer 4

\(\left(\frac{-1}{5}+\frac{3}{12}\right)+\frac{-3}{4}\)

\(\left(\frac{-1}{5}+\frac{1}{4}\right)+\frac{-3}{4}\)

\(\frac{1}{20}+\frac{-3}{4}\)

\(\frac{-7}{10}\)

Answer 5

uk. Bày đi 

Answer 6

đề bài là gì ?

Answer 7

Cảm ơn !