Question

Efetue as operações 7/2 * (10/11 - 1/7)

Answer 1

$\frac{7}{2}$.($\frac{10}{11}$ - $\frac{1}{7}$) =

$\frac{7}{2}$.($\frac{7.10 - 11.1}{77}$) =

$\frac{7}{2}$.($\frac{70 - 11}{77}$) =

$\frac{7}{2}$.$\frac{59}{77}$ =

$\frac{59}{22}$

Answer 2

Vamos lá:
7/2 . ( 10/11 - 1/7 ) mmc de 11 e 7 = 77
7/2 . ( 70/77 - 11/77)
7/2 . 59/77
413/154