Question

calcule: a)2/7•3/5 b) 10•2/5 C) 3/7•6/10 ​

Answer 1

Resposta:

$a) \frac{2}{7} . \frac{3}{5} = \frac{2}{7} \times \frac{3}{5} = \frac{2 \times 3}{7 \times 5} = \frac{6}{35}$

$b)10. \frac{2}{5} = 10 \times \frac{2}{5} = \frac{10 \times 2}{5} = \frac{20}{5} = \frac{20 \div 5}{5 \div 5} = \frac{4}{1} = 4$

$c) \frac{3}{7} . \frac{6}{10} = \frac{3}{7} \times \frac{6}{10} = \frac{3 \times 6}{7 \times 10} = \frac{18}{70} = \frac{18 \div 2}{70 \div 2} = \frac{9}{35}$

Espero ter ajudado

Answer 2

Resposta:

a) 2/7.5/3=10/21

b) 10/2.1/5=1

c) 3/6.10/6=30/36=5/4

Explicação passo-a-passo:

           Bons estudos!