Question

O valor da expressão (-2-3/4+5/8)-(6-9/2)é

Answer 1

(-2 -3/4 + 5/8) - (6 -9/2)

(-8-3/4 + 5/8) - (12-9/2)

(-11/4 + 5/8) -3/2

(20-88/32) -3/2

-68/32 -3/2

-136-96/64

-232/64

-29/8

Answer 2

= (-2 -3/4 +5/8)-(6 -9/2) = [8.(-2)+2.(-3)+5]/8 - [(2.6-9)/2] = [-16-6+5]/8 - (3/2) = [- 22+5]/8 - 3/2 = - 17/8 - 3/2 = [-17 - (4.3)]/8 = [ -17-12]/8 = - 29/8