Question

Calcule o valor de x:

Answer 1

Explicação passo-a-passo:

$a) \frac{15}{5} = \frac{20}{x} \\ 15x = 5.20 \\ 15x = 100 \\ x = \frac{100}{15}$

x= 100/15 ÷ (5/5)

x=20/3

$b) \frac{16}{x} = \frac{20}{4}$

20x=4*16

20x=64

x=64/20 : (4/4)

x=16/5