Question

a 2/8+1/3+1/4

b 5/7+4/3+5/7

Giải cho mình 2 câu này với

Answer 1

\(a,\dfrac{2}{8}+\dfrac{1}{3}+\dfrac{1}{4}=\dfrac{6}{24}+\dfrac{8}{24}+\dfrac{6}{24}=\dfrac{6+8+6}{24}=\dfrac{20}{24}=\dfrac{5}{6}\)

\(b,\dfrac{5}{7}+\dfrac{4}{3}+\dfrac{5}{7}=\dfrac{15}{21}+\dfrac{28}{21}+\dfrac{15}{21}=\dfrac{15+28+15}{21}=\dfrac{58}{21}\)

Answer 2

a: =1/4+1/4+1/3

=1/2+1/3=5/6

b: =10/7+4/3

=30/21+28/21

=58/21

Answer 3

a 2/8+1/3+1/4

=2/12+1/4

=5/6.

b 5/7+4/3+5/7

=5/7x2+4/3

=10/7+4/3

=58/21.