Question

Calcule as frações:
A- 6/2 + 9/4
B- 3/9 + 12/10
C- 9/5 + 8/4
D- 10/7 + 3/10
E- 3/5 + 2/3
F- 2/3 - 1/5
G- 5/13 - 1/13
H- 1/4 + 2/6
I- 5/6 +1/2

Me ajudem por favor ❤️❤️

Answer 1

Resposta:

A)

6/2 + 9/4

$\sf{3 + \frac{9}{4} }$

$\sf{ \frac{12 + 9}{4} }$

$\rightarrow \boxed{ \sf{ \frac{21}{4} }}$

B)

3/9 + 12/10

$\sf{ \frac{1}{3} + \frac{12}{10} }$

$\sf{ \frac{1}{3} + \frac{6}{5} }$

$\sf{ \frac{5 + 18}{15} }$

$\rightarrow \boxed{ \sf{ \frac{23}{15} }}$

C)

9/5 + 8/4

$\sf{ \frac{9}{5} + 2 }$

$\sf{ \frac{9 + 10}{5} }$

$\rightarrow \boxed{ \sf{ \frac{19}{5} }}$

D)

10/7 + 3/10

$\sf{ \frac{100 + 21}{70} }$

$\rightarrow \boxed{ \sf{ \frac{121}{70} }}$

E)

3/5 + 2/3

$\sf{ \frac{9 + 10}{15} }$

$\rightarrow \boxed{ \sf{ \frac{19}{15} }}$

F)

2/3 - 1/5

$\sf{ \frac{10 - 3}{15} }$

$\rightarrow \boxed{ \sf{ \frac{7}{15} }}$

G)

5/13 - 1/13

$\sf{ \frac{5 - 1}{13} }$

$\rightarrow \boxed{ \sf{ \frac{4}{13} }}$

H)

1/4 + 2/6

$\sf{ \frac{1}{4} } + \frac{1}{3}$

$\sf{ \frac{3 + 4}{12} }$

$\rightarrow \boxed{ \sf{ \frac{7}{12} }}$

I)

5/6 +1/2

$\sf{ \frac{5 + 3}{6} }$

$\sf{ \frac{8}{6} }$

$\rightarrow \boxed{ \sf{ \frac{4}{3} }}$

Explicação passo-a-passo:

(espero ter colaborado)

Answer 2

Explicação passo-a-passo:

A- 6/2 + 9/4

= 12/4 + 9/4

= 21/4

B- 3/9 + 12/10

= 1/3 + 6/5

= 5/15 + 18/15

= 23/15

C- 9/5 + 8/4

= 36/20 + 40/20

= 76/20

D- 10/7 + 3/10

= 100/70 + 21/70

= 121/70

E- 3/5 + 2/3

= 9/15 + 10/15

= 19/15

F- 2/3 - 1/5

= 10/15 - 3/15

= 12/15

G- 5/13 - 1/13

= 4/13

H- 1/4 + 2/6

= 3/12 + 4/12

= 7/12

I- 5/6 +1/2

= 5/6 + 3/6

= 8/6