Question

- faça a adição ou subtração das frações com denominadores diferentes ​

Answer 1

Resposta:

Explicação passo a passo:

g)

'5/7+4/3-6/9(:3)/(:3) '

="5/7+4/3 - 2 / 3"

= "5 / 7 + 2 / 3"

"mmc (7,3)= 21"

= "(3.5+7.2)/21"

= "29/21"

b)

'5/8+4/13"

MmC(8,13) = 104'

(13.5+8.4)/104

"(65+32)/104"

= "97/104"

d)

= "4/5+7/6'

"mmc (5,6)= 30"

= (6.4+5.7)/30'

'= (24+35)/30'

= "59/30"

f)

"9/12 (:3)/(:3) -5/13"

= "3/4-5/13"

= '(13.3-4.5)/52

= '(39-20)/52'

= "19/52"

______________

H)

"13/15-4/6+7/3"

= (2.13-5.4+10.7)/30

= "(26-20+70)/30"

= "76/30(:2)/(:2)"

= "38/15"