Question

Efetue as adiçoes:

a) 1 sobre 3 + 1 sobre 5

b) 3 sobre 4+ 1 sobre 2

c) 2 sobre 4+ 2 sobre 3

Answer 1

 

 

a) 1/3 + 1/5 =  (5+3)/15  => 8/15         mmc = 15

 

 

b) 2/4 + 1/2  = ( 2+2)/4 => 4/4 = 1    mmc = 4

 

c) 2/4 + 2/3  = ( 6+8)/12 => 14/12 ou  7/6      mmc= 12 

Answer 2

tira o mmc
$<var>\frac{1}{3} + \frac{1}{5} = \frac{5}{15} + \frac{3}{15} = \frac{8}{15}</var>$ 

 

$<var>\frac{3}{4} + \frac{1}{2} = \frac{3}{4} + \frac{2}{4} = \frac{5}{4}</var>$

 

$<var>\frac{2}{4} + \frac{2}{3} = \frac{6}{12} + \frac{8}{12} = \frac{14}{12} = \frac{7}{6}</var>$