Nicoletaspinu1980ask
a fost răspuns

[1 + 2x(6+6:a)-5:6=2
314 - 2x| (16+a)-(83 -791)=260
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Răspuns :

Mihaelaaxintee1978ask
  1. [1+2×(6+6:a)]-5=2×6
  2. [1+2×(6+6:a)]-5=12
  3. 1+2×(6+6:a)=12+5
  4. 1+2×(6+6:a)=17
  5. 2×(6+6:a)=17+1
  6. 2×(6+6:a)=18
  7. 6+6:a=18:2
  8. 6+6:a=9
  9. 6:a=9-6
  10. 6:a=3
  11. a=6×3
  12. a=18

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