Question

calcule e simplifique o resultado se possivel.

a) 1/3 +2/9+4/3
b)1/10+7/10+3/10
c)7/15+3/15-1/10
d) 7/8-2/8-1/8

Answer 1

Boa noite;

Vamos lá;

a) 1/3 + 2/9 + 4/3 

mmc(3,9) = 9

3 /9 +2/9+12/9= 17/9

b)

1/10 +7/10+3/10 =11/10

c)

7/15 + 3/15 - 1/ 10

mmc(15,10)=30

14/30+ 6/30- 3/30=17/30

d)

7/8 -2/8 -1/8=4/8:4=1/2

Espero ter ajudado
Bons Estudos :)

Answer 2

a) $\frac{1}{3}$ + $\frac{2}{9}$ + $\frac{4}{3}$    Mmc (3, 9) = 9
$\frac{3+2+12}{9}$
$\frac{17}{9}$

b) $\frac{1}{10}$ + $\frac{7}{10}$ + $\frac{3}{10}$
$\frac{1+7+3}{10}$
$\frac{11}{10}$

c) $\frac{7}{15}$ + $\frac{3}{15}$ - $\frac{1}{10}$    Mmc (15, 10) = 30
$\frac{14+6-3}{30}$
$\frac{17}{30}$

d) $\frac{7}{8}$ - $\frac{2}{8}$ - $\frac{1}{8}$
$\frac{7-2-1}{8}$
$\frac{4}{8}$    /4
$\frac{1}{2}$

Espero ter lhe ajudado =)