Question

Me ajudem por favorrr!!! Urgenteee!!!!

Answer 1

4)

a) ( - 4/5 ) + ( - 1/2 ) (MMC: 10)

( - 8/10 ) + ( - 5/10 ) =

- 13/ 10

b) ( - 5/ 3 ) - ( - 3/4 ) (MMC: 12)

( - 20/12 ) - ( - 9/ 12 ) =

- 20/ 12 + 9/12 =

- 11/12

c) 3/4 - 0,25 ( tranforma em fração)

3/4 - 25/100 ( simplifica)

3/4 - 1/4 =

2/4

d) - 7/15 + 1

- 7/15 + 1/1 (MMC: 15)

- 7/15 + 15/15

8/15