Question

resolvam pra mim por favorrrrr

$(\frac{-3}{8}) +( \frac{+2}{9}) +( \frac{7}{19} )=$

explique essa conta

Answer 1

(-3/8) + (2/9) + (7/19)

mmc(8,9,19) = 8*9*19 = 1368

(-3*9*19)/1368 + (2*8*19)/1368 + (7*8*9)/1368  = 295/1368

Answer 2

Resposta:

295/1368

Explicação passo-a-passo:

8, 9, 19 | 2

4, 9, 19 | 2

2, 9, 19 | 2

1, 9, 19 | 3

1, 3, 19 | 3

1, 1, 19 | 19

1, 1, 1 | 1

MMC = 2 . 2 . 2 . 3 . 3 . 19 = 1368

$(\frac{-3}{8}) +( \frac{+2}{9}) +( \frac{7}{19} )=\\\\\frac{1368\div8*(-3)+1368\div9*(2)+1368\div19*(7)}{1368}=\\\\\frac{171*(-3)+152*(2)+72*(7)}{1368}=\\\\\frac{-513+304+504}{1368} =\\\\\frac{295}{1368}$