Question

Giúp mình với 

 

 

Answer 1

\(A.=\dfrac{83}{42}\)

\(B.=6\dfrac{4}{10}\)

Answer 2

a , \(\dfrac{6}{7}\)+ \(\dfrac{5}{8}\) = \(\dfrac{48}{56}\) +\(\dfrac{30}{56}\) = \(\dfrac{78}{56}\)

b , \(\dfrac{107}{10}-\dfrac{43}{10}\) =\(\dfrac{154}{10}\)

Answer 3

A,   \(\dfrac{6}{7}+\dfrac{5}{8}=\dfrac{48}{56}+\dfrac{35}{56}=\dfrac{83}{56}\)

B,\(10\dfrac{7}{10}-4\dfrac{3}{10}=\dfrac{107}{10}-\dfrac{43}{10}=\dfrac{64}{10}\)