Question

Efetue as operações.

a)4/6+1/6

b)2/3+5/9

c)6/7-3/5

d)7/2+4

e)8/2-20/5

f)4\5+2/3-8/15

por favor me ajuda eu ñ entendi​

Answer 1

Resposta:

Explicação passo-a-passo:

Efetue as operações.

a)

= 4/6+1/6

= 5/6

__________

b)2/3+5/9

Mmc (3,9)=9

= (3.2 + 1.5)/9

= (6+5)/9

= 11/9

___________

c)6/7 - 3/5

Mmc (7,5) = 35

= (5.6 - 7.3)/35

= ( 30 - 21)/35

= 9/35

--------------

d) 7/2+4

=(7+2.4) /2

= (7+8)/2

= 15/2

--------------------

e) 8/2 - 20/5

= 4-4

= 0

____________

f)

= 4/5 + 2/3 - 8/15

Mmc (5,3,15)=15

= (3.4+5.2-1.8)/15

= (12+10-8)/15

= (22-8)/15

= 14/15