Question

M={8/7-[3/4+(2/3.1/8+1/2).4/7].[8.1/4-(9/2+3)]}.56/37-1/2= Qual é o valor de M-10=

Answer 1

M = {8/7 - [ 3/4 + (2/3 . 1/8 + 1/2) . 4/7] . [8 . 1/4 - (9/2 + 3)]} .56/37 - 1/2

M  = {8/7 - [3/4 + (2/24+1/2) . 4/7] . [8/4 - ((9 + 6)/3)]} . 56/37 - 1/2

M = {8/7 - [3/4 + ((2 + 12)/24) . 4/7] . [2 - 5]} . 56/37 - 1/2

M = {8/7 - [3/4 + (7/12) . 4/7] . [- 3]} . 56/37 - 1/2

M = {8/7 - [3/4 + 1/3] . [- 3]} . 56/37 - 1/2

M = {8/7 - [(9 + 4)/12] . [- 3]} . 56/37 - 1/2

M = {8/7 - [13/12] . [- 3]} . 56/37 - 1/2

M = {8/7 - [- 39/12]} . 56/37 - 1/2

M = {8/7 - [ -13/4]} . 56/37 - 1/2

M = {8/7 + 13/4} . 56/37 - 1/2

M = {(32 + 91)/28} . 56/37 - 1/2

M = {123/28} . 56/37 - 1/2

M =6888/1036 - 1/2

M =3444/518 - 1/2  ------ M = 1722/259 - 1/2 ------ M = 246/37 - 1/2

M = (492 - 37)/74 ------ 455/74

M - 10 ----- 455/74 - 10 ----- (455 - 740)/74 -----   - 285/74

Creio que seja isto.