Question

3/5+3/2+7/8=como resolver e encontrar o mmc

Answer 1

Primeiro achar o MMC de 2,5,8:

2,5,8l2
1,5,4l2
1,5,2l2
1,5,1l5
1,1,1
MMC(2,5,8)=2.2.2.5=40

Agora divide pelo debaixo e multiplica pelo de cima:
3/5+3/2+7/8=
8.3/40+20.3/40+5.7/40=
24/40+60/40+35/40=
119/40