Verified answer

Resposta:

3/5 - (-1/2 + 3/4) + (1/10 - 5/8)

3/5 - (-2/4 + 3/4) + (8/80 - 50/80)

3/5 - (1/4) + (-42/80)

3/5 - 1/4 - 42/80

12/20 - 5/20 - 42/80

7/20 - 42/80

28/80 - 42/80

-14/80

-7/40

-0,175

Maior número inteiro menor que -0,175 = -1