Question

me ajudem na conta 20+15-(18-10)-9]-10

Answer 1

[20+15-8-9]-10
[35-8-9]-10
[27-9]-10
18-10
8

Answer 2

20+[15-(18-10)-9]-10
20+[15-(8)-9]-10
20+[15-8-9]-10
20+[15-17]-10
20+[-2]-10
20-2-10
20-12
8

a resposta é 8