Question

complete as igualdades

b - 2/7 = 16/ ?
c - 18/?? =9/15
d - ??/42 = 4/7
f - 6/?? = 54/???


me ajudem e urgente ​

Answer 1

Resposta:

b)

$\frac{2}{7} = \frac{16}{x}$

$2x = 16 \times 7$

$x = \frac{112}{2} = 56$

$\frac{2}{7} = \frac{16}{56}$

c)

$\frac{18}{x} = \frac{9}{15}$

$9x = 15 \times 18$

$x = \frac{270}{9} = 30$

$\frac{18}{30} = \frac{9}{15}$

d)

$\frac{?}{42} = \frac{4}{7}$

6×4=24

$\frac{24}{42} = \frac{4}{7}$

f)

$\frac{6}{?} = \frac{54}{?}$

54÷6=9

$\frac{6}{9} = \frac{54}{81}$

Bons Estudos Jovem!!