Question

me ajudem nessas frações pffvr

Answer 1

Resposta:

a) 59/12

b) 97/30

c) 5/28

d) 58/105

e) 57/20

f) 67/24

Explicação passo-a-passo:

a) 1/4 + 2/3 + 4 =         mmc(4,3) = 12

3.1/12 + 4.2/12 + 12.4/12 = 3/12 + 8/12 + 48/12= 59/12

b) -1/6 + 2/5 - 3 = =         mmc(6,5) = 30

5.-1/30 + 6.2/30 - 30.3/30 = -5/30 + 12/30 + 90/30= 97/30

c) - 1/4 + 3/7 =       mmc(4,7) = 28

7. -1/28 + 4.3/28 = - 7/28 + 12/28 = 5/28

d) - 1/5 + 2/3 + 1/7 =     mmc(5,3,7) = 105

21. -1/105 + 32.2/105 + 15.1/105 = - 21/105 + 64/105 + 15/105 = 58/105

e) - 1/4 + 2/5 - 3 =      mmc(4,5) = 20

5.-1/20 + 4.2/20 - 20.3/20 = - 5/20 + 8/20 - 60/20 = 57/20

f) - 1/8 - 2/3 - 2 =        mmc(8,3) = 24

3. -1/24 - 8.2/24 - 24.2/24 = - 3/24 - 16/24 - 48/24 = 67/24