Question

efetue:
a) 3/5+1/2=
b)2/7+1/3=
c)2/5×3/4=
d)7/6÷3/2=​

Answer 1

Resposta:

$a) = \frac{11}{10}$     $b) = \frac{13}{21}$       $c) = \frac{6}{20}$            $d) = \frac{14}{18}$  

Explicação passo-a-passo:

a) 3/5+1/2=    $\frac{3}{5} + \frac{1}{2} = \frac{3 . 2 +1 . 5}{10} = \frac{6 + 5}{10} = \frac{11}{10}$

b)2/7+1/3=    $\frac{2}{7} + \frac{1}{3} = \frac{2 . 3 + 1 . 7}{21} = \frac{6 + 7}{21} = \frac{13}{21}$

c)2/5×3/4=   $\frac{2}{5} . \frac{3}{4} = \frac{2 . 3 }{5 . 4} = \frac{6}{20}$

d)7/6÷3/2=​  $\frac{7}{6} : \frac{3}{2} = \frac{7}{6} . \frac{2}{3} = \frac{14}{18}$