Question

HELP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Resposta:

a)

$\frac{2}{4} = \frac{8}{x} \\ \\ 2x = 4 \times 6 \\ \\ 2x = 24 \\ \\ x = 144 \div 4 \\ \\ x = 12$

B)

$\frac{4}{9} = \frac{16}{x} \\ \\ 4x = 9 \times 16 \\ \\ 4x = 144 \\ \\ x = 144 \div 4 \\ \\ x = 36$

c)

$\frac{5}{15} = \frac{40}{x} \\ \\ 5x = 15 \times 40 \\ \\ 5x = 600 \\ \\ x = 600 \div 5 \\ \\ x = 120$

d)

$\frac{3}{18} = \frac{12}{x} \\ \\ 3x = 18 \times 12 \\ \\ 3x = 216 \\ \\ x = 216 \div 3 \\ \\ x = 72$