Caucule as expressoes
28+{13-[6-(4+1)+2]-1}
53-{20-[30-(15-1+6)+2]}
{42+[(45-19)-(18-3)+1]-(28-15)-1}
62={16-[7-(6-4)+1]}
20-{8+[3+(8-5)-1+6}
15+{25-[-(8-6)]+2}
56-[3+(8-)+(51-10)-(7-2)]
28+{13-[6-(5)+2]-1}
28+{13-[1+2]-1}
28+{13-3-1}]
28+9=37
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53-{20-[30-(15-1+6)+2]}
53-(20-[30-(20)+2]}
53-{20-[12]}
53-8=45
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{42+[(45-19)-(18-3)+1]-(28-15)-1}
{42+[(26)-(15)+1]-(23)-1}
{42+[12]-22}=32
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62={16-[7-(2)+1]}
62={16-[6]}
62=10 (f)
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