Question

Calcule 38 – { 20 – [ 22 – ( 5 + 3) + ( 7 – 4 +1)]}

Answer 1

acho que 28

5+3 = 8

7-4+1 = 4

8+4 = 12

22-12 = 10

20-10 = 10

38-10 = 28

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