Question

Exercícios de fixação:

a) 5/6÷1/6=

b) 5/7÷2/3=

c) 2/9÷10=

d) 1/2÷(2/3x5/2)=

e) (5/11÷2/11)x5/8=

f) 9/10-2/5÷(1/2+1/6)=

g) 5/12/10/36=

Se puder colocar os cálculos agradeço ​​

Answer 1

Resposta:

Oi tudo bem ?

Explicação passo a passo:

a) 5/6÷1/6= $\frac{5}{6} * 6 = 5 ( corta os dois 6)$

b) 5/7÷2/3= $\frac{5}{7} * \frac{3}{2} = \frac{15}{14}$

c) 2/9÷10= $\frac{2}{9} * \frac{1}{10}$$= \frac{1}{9} * \frac{1}{5}$  =$\frac{1}{45}$

d) 1/2÷(2/3x5/2)= $\frac{1}{2} / (\frac{2}{3} *\frac{5}{2} )$$=\frac{1}{2} / (\frac{1}{3} * 5)$ $= \frac{1}{2} / \frac{5}{3} ( multiplique) = \frac{1}{2} *\frac{3}{5} ( inverte) =\frac{3}{10}$

e) (5/11÷2/11)x5/8= $(\frac{5}{11} *\frac{11}{2} )\frac{5}{8} = (5*\frac{1}{2} ) * \frac{5}{8} = \frac{5}{2} *\frac{5}{8} = \frac{25}{16}$

f) 9/10-2/5÷(1/2+1/6)= $\frac{9}{10}- \frac{2}{5} / \frac{2}{3} =\frac{9}{10} -\frac{2}{5} * \frac{3}{2} = \frac{9}{10} -\frac{1}{5} *3=\frac{9}{10} -\frac{3}{5} =\frac{3}{10}$

g) 5/12/10/36=$\frac{5}{12} * \frac{36}{10} = 5*\frac{3}{10} = \frac{3}{2}$

Espero que tenha entendido.

Bons estudos !!!!!