Question

a) (-1/3) + (-1/5) =
b) (-1/8) + (5/4) =
c) (+1/5) + ( +3/5) =
me ajudem pliss
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Answer 1

Oie, Td Bom?!

a)

= - 1/3 + (- 1/5)

= - 1/3 - 1/5

= - (1/3 + 1/5)

= - ([1 . 5]/[3 . 5] + [1 . 3]/[5 . 3])

= - (5/15 + 3/15)

= - [5 + 3]/15

= - 8/15

b)

= - 1/8 + 5/4

= - 1/8 + [5 . 2]/[4 . 2]

= - 1/8 + 10/8

= [- 1 + 10]/8

= 9/8

c)

= 1/5 + 3/5

= [1 + 3]/5

= 4/5

Att. Makaveli1996