Verified answer

Resposta:

a)

[tex]x \div \frac{1}{7} = \frac{7}{2} \\ x = \frac{7}{2} \times \frac{1}{7} \\ x = \frac{7}{14} ( \div 7 \\ x = \frac{1}{2} [/tex]

b)

[tex] \frac{6}{11} \times x = \frac{9}{22} \\ x = \frac{9}{22} \div \frac{6}{11} \\ x = \frac{9}{22} \times \frac{11}{6} \\ x = \frac{9 \times 11}{22 \times 6} \\ x = \frac{99}{132} ( \div 3 \\ x = \frac{33}{44} \\ x = \frac{3}{4} [/tex]

c)

[tex]x \div \frac{3}{5} = \frac{5}{8} \\ x = \frac{5}{8} \times \frac{3}{5} \\ x = \frac{15}{40} ( \div 5 \\ x = \frac{3}{8} [/tex]

d)

[tex]x \times \frac{7}{8} = 56 \\ x = 56 \div \frac{7}{8} \\ x = 56\times \frac{8}{7} \\ x = \frac{56 \times 8}{7} \\ x = \frac{448}{7} ( \div 7 \\ x = \frac{64}{1} \\ x = 64[/tex]