Question

18/35.(2/5+21/15.5/49).(7/2-1)


2/5[1 +2/3.(1/4-1/5)]


3/2+(1 1/2).2+1 1/3.(3+1/4)


1+1/2.5/4-2/3.(5/2-2/5)


(11/2-11/4).(2/5+1/25)

Answer 1

Acredito que estas são as respostas... Espero ter ajudado.