Question

Quanto é:
3/7x7/5=
2/9+1/2=
7/5 de 280kg=
metade de 5/8=
9/7-7/9=

Answer 1

a) 3/7×7/5=21/35=3/5 = 0,6
b)2/9+1/2=(4+9)/18 = 13/18
c)7/5×280kg=7×56 = 392kg
d)(5/8)/2 = 5/16
e)9/7-7/9=(81-49)/63 = 32/63