Resposta :

AntoniLAD

2{2-2[2-4(3.2:3)+2]}+1

2{2-2[2-4(2)+2]}+1
2{2-2[2-8+2]}+1
2{2-2[-4]}+1
2{10}+1
20+1=21


espero ter ajudado
ccsa15
2{2-2[2-4(3*2/3)+2]}+1
2{2-2[2-4(6/3)+2]}+1
2{2-2[2-4(2)+2]}+1
2{2-2[2-8+2}}+1
2{2-2[-4]}+1
2{2-2[-4]}+1
2{2+8}+1
2{10}+1 = 20+1=21

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