Question

Thực hiện phép tính

21/38 - 7/126 + 1/2 =

Mh đg cần gấp

Answer 1

\(\frac{21}{38}-\frac{7}{126}+\frac{1}{2}\)
\(=\frac{85}{171}+\frac{1}{2}\)
\(=\frac{341}{342}\)

Answer 2

thank you

Answer 3

có chắc đúng ko bn

Answer 4

\(\frac{21}{38}-\frac{7}{126}+\frac{1}{2}\)

= \(\frac{189}{342}-\frac{19}{342}+\frac{171}{342}\)

= \(\frac{341}{342}\)

Answer 5

21/38-7/126+1/2=21\38-1\18+1/2=341/342

Answer 6

\(\frac{21}{38}\)\(-\frac{7}{126}\)\(+\frac{1}{2}\)\(=\frac{21}{38}\)\(-\frac{1}{18}\)\(+\frac{1}{2}\)\(=\frac{341}{342}\)

\(hoc\)\(tot\)

Answer 7

\(\frac{21}{38}\)-\(\frac{7}{126}\)+\(\frac{1}{2}\)

=\(\frac{5292}{9576}\)-\(\frac{532}{9576}\)+\(\frac{4788}{9576}\)

=\(\frac{2387}{2394}\)

Answer 8

=21/38-1/18+1/2

=189/342-18/342+171/342

=341/342