Question

reduza ao mesmo denominador comum em seguida efetue as somas e faça a operação

A) 4/9 , 1/8

B) 1/6 , 1/8

C) 7/9, 1 , 2/15 , 1/2

Answer 1

Respostas:

A) 4/9, 1/8.................( m.m.c = 8 . 9 = 72)

......32/72,...9/72

......32/72 + 9/72 = 41/72

B)...1/6,....1/8.................( m.m.c = 2.2.2.3 = 24)

.......4/24,...3/24

.......4/24 + 3/24 = 7/24

C)...7/9, 1, 2/15, 1/2..........(m.m.c. = 2.3.3.5 = 90 )

.....70/90, 90/90, 12/90, 45/90

.....70/90 + 90/90 + 12/90 + 45/90 = 217/90

Answer 2

Oi

a) $\frac{4}{9} , \frac{1}{8}$ = $\frac{32}{72} , \frac{9}{72} =$

Efetuando a soma:

$\frac{32}{72}+\frac{9}{72} = \frac{41}{72}$

b) $\frac{1}{6},\frac{1}{8} = \frac{4}{24} , \frac{3}{24} =$

efetuando a soma

$\frac{4}{24}+\frac{3}{24} = \frac{7}{24}$

c) $\frac{7}{9},1,\frac{2}{15}, \frac{1}{2} = \frac{70}{90},\frac{90}{90},\frac{12}{90},\frac{45}{90}$

Efetuando a soma

$\frac{70}{90} +\frac{90}{90} +\frac{12}{90} +\frac{45}{90}=\frac{217}{90}$

Espero ter ajudado