Question

3/7+5/7+1+3+5++2/7+4/7+2=???

giúp mình với

Answer 1

giúp mình  đi

Answer 2

\(\dfrac{3}{7}+\dfrac{5}{7}+1+3+4+\dfrac{2}{7}+\dfrac{4}{7}+2=\left(\dfrac{3}{7}+\dfrac{5}{7}+\dfrac{2}{7}+\dfrac{4}{7}\right)+\left(1+3+4+2\right)=2+10=12\)

Answer 3

3/7+5/7+1+3+5+2/7+4/7+2

=(3/7+5/7+2/7+4/7)+(1+3+5+2)

=2+11

=13