Question

alguem pode me ajudar nessas contas !!!!

​

Answer 1

B)

$\frac{(9 + 5).7}{2} = \frac{14 \times 7}{2} = \frac{98}{2} = 49$

C))

$\frac{(11 + 6).4}{2} = \frac{17.4}{2} = \frac{68}{2} = 34$

D)

$\frac{(12 + 8).3}{2} = \frac{20.3}{2} = \frac{60}{2} = 30$

E)

$\frac{(15 + 7).2}{2} = \frac{22.2}{2} = \frac{44}{2} = 22$