Question

bài 1 rút gọn rồi tính

a. 2/8+5/6

Answer 1

a, =1/4 + 5/6

=3/12 + 10/12

=13/12

Answer 2

\(\frac{2}{8}\)+\(\frac{5}{6}\)

=\(\frac{1}{4}\)+\(\frac{5}{6}\)

=\(\frac{6}{24}\)+\(\frac{20}{24}\)

=\(\frac{13}{12}\)

Answer 3

12/18_12/42

Answer 4

\(\frac{1}{4}+\frac{5}{6}=\frac{6}{24}+\frac{20}{24}=\frac{26}{24}=\frac{13}{12}\)

Answer 5

2/8=1/4 

1/4 + 5/6 = 6/24 + 20/24 = 26/24 = 13/12

Answer 6

\(\frac{2}{8}+\frac{5}{6}=\frac{1}{4}+\frac{5}{6}\)

\(\frac{1}{4}=\frac{1x3}{4x3}=\frac{3}{12}\)

\(\frac{5}{6}=\frac{5x2}{6x2}=\frac{10}{12}\)

\(\frac{1}{4}+\frac{5}{6}=\frac{3}{12}+\frac{10}{12}=\frac{13}{12}\)