Question

Efetue as operações de adição e subtração com frações:
ME AJUDEM POR FAVOR,É URGENTE

Answer 1

Olá!

$a)~~\dfrac{1}{2} +\dfrac{2}{3}~~=~~\dfrac{3+4}{6}~~=~~\dfrac{7}{6} \\ \\ \\ \\ b)~~-\dfrac{1}{2} +\dfrac{7}{3}~~=~~\dfrac{-3+14}{6}~~=~~\dfrac{11}{6}\\ \\ \\ \\ c)~~\dfrac{12}{2} -\dfrac{10}{2}~~=~~\dfrac{12-10}{2}~~=~~ \dfrac{2}{2}~~=~~1$

:)

Answer 2

Oie, Td Bom?!

a)

= 1/2 + 2/3

= [1 . 3]/[2 . 3] + [2 . 2]/[3 . 2]

= 3/6 + 4/6

= [3 + 4]/6

= 7/6

b)

= [- 1]/2 + 7/3

= [- 1 . 3]/[2 . 3] + [7 . 2]/[3 . 2]

= [- 3]/6 + 14/6

= [- 3 + 14]/6

= 11/6

c)

= 12/2 - 10/2

= [12 - 10]/2

= 2/2

= 1

Att. Makaveli1996