Question

resolva: (2*1*0) + [ (1+x) *1*5] + (3*2*2) - [ (1+x) *2*0] - (2*1*2) - (3*1*5)

Answer 1

(2*1*0) + [ (1+x) *1*5] + (3*2*2) - [ (1+x) *2*0] - (2*1*2) - (3*1*5)
(0) + [(1+x) * 5] + (12) - [(1 + x) * 0] - (4) - (15)
[5 + x] + 12 - [0] - 4 - 15
5 + x + 12 - 4 - 15
x - 2