Expressões numéricas

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Across
  1. 4. 32 – [(12-6) + 8]=
  2. 7. ( 22+4 )-17 +5=
  3. 8. ( 9+8) +( 16-9)=
  4. 10. 17 +{[26-(15-8)+(8-4) ]-9}=
Down
  1. 1. 10-{[(5+5)-3]-2}=
  2. 2. 15 + ( 26-12) – 8 =
  3. 3. 25 + [ 12 + ( 8-5) +2]=
  4. 5. {[(50-20)-30]+20}+10=
  5. 6. 45+{ 42-[18+(9-5)+5] }=
  6. 9. {76 –[42+(12-6)+3]-10}-2=