Question

Cần gấp!!!

Answer 1

3/8+1/4=3/8+2/8=5/8

2+3/4=8/4+3/4=11/4

27/36-15/36=3/4-5/12=9/12-5/12=4/12=1/3

16/24-1/6=2/3-1/6=4/6-1/6=1/2

Answer 2

= 1/2

Answer 3

\(\dfrac{3}{8}+\dfrac{1}{4}=\dfrac{3}{8}+\dfrac{2}{8}=\dfrac{5}{8}\\ 2+\dfrac{3}{4}=\dfrac{8}{4}+\dfrac{3}{4}=\dfrac{11}{4}\\ \)

\(\dfrac{27}{36}-\dfrac{15}{36}=\dfrac{12}{36}=\dfrac{1}{2}\\ \)

\(\dfrac{16}{24}-\dfrac{1}{6}=\dfrac{16}{24}-\dfrac{4}{24}=\dfrac{12}{24}=\dfrac{1}{2}\)

Answer 4

=3/8+2/8=5/8

=8/4+3/4=11/4

=12/36

=4/6-1/6=5/6

Answer 5

\(\dfrac{3}{8}+\dfrac{1}{4}=\dfrac{3+2}{8}=\dfrac{5}{8}.\\ 2+\dfrac{3}{4}=\dfrac{8+3}{4}=\dfrac{11}{4}.\\ \dfrac{27}{36}-\dfrac{15}{36}=\dfrac{27-15}{36}=\dfrac{12}{36}=\dfrac{1}{3}.\\ \dfrac{16}{24}-\dfrac{1}{6}=\dfrac{16-4}{24}=\dfrac{12}{24}=\dfrac{1}{2}.\)

\(\dfrac{10}{11}-\dfrac{9}{10}=\dfrac{100-99}{110}=\dfrac{1}{110}.\\ \dfrac{25}{4}-3=\dfrac{25-12}{4}=\dfrac{13}{14}.\\ \dfrac{13}{12}+\dfrac{1}{6}-\dfrac{3}{4}=\dfrac{13+2-9}{12}=\dfrac{6}{12}=\dfrac{1}{2}.\\ \dfrac{15}{4}-\dfrac{2}{3}-\dfrac{7}{8}=\dfrac{90-16-21}{24}=\dfrac{53}{24}.\)

Answer 6

= 1/2