Question

1/4+4/8+6/5+3/9+3/2=

Answer 1

1/4+4/8+6/5+3/9+3/2= MMC de 4,8,5,9e 2=360

90/360+180/360+432/360+120/360+540/360=

1362/360

Answer 2

Primeiro passo eh tirarmos o mmc dos denominadores:

4,8,5,9,2/2
2,4,5,9,1/2
1,2,5,9,1/2
1,1,5,9,1/3
1,1,5,3,1/3
1,1,5,1,1/5
1,1,1,1,1

mmc=2×2×2×3×3×5=360

Entao substituimos todos os denominadores por 360 e para descobrir o numerador vamos dividir elo debaixo e multiplicar pelo de cima:

$\dfrac14+\dfrac48+\dfrac65+\dfrac39+\dfrac32=\dfrac{90+180+432+120+540}{360}=\dfrac{1362}{360}=\dfrac{227}{60}$