Question

6/7 + 5/8
36/12 - 5/3
7/9 x 18/49

Answer 1

6/7 + 5/8 = 83/56
36/12 - 5/3= 3 - 5/3 = 9/3 - 5/3 = 4/3
7/9 x 18/49 = 126/441 = 2/7

Answer 2

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

\(\dfrac{36}{12}-\dfrac{5}{3}=\dfrac{9}{3}-\dfrac{5}{3}=\dfrac{4}{3}\)

\(\dfrac{7}{9}\times\dfrac{18}{49}=\dfrac{7\times2\times9}{9\times7\times7}=\dfrac{2}{7}\)