Question

Buna. Ma poate ajuta si pe mine careva la ex 7 si 12. Va multumesc!

Answer 1

EX.12->

a)317+    =914-220

914-220=694

694-317=377 => 317+377=914-220

520-   =870-354

870-354=516

520-516=4 => 520-4=870-354

189+   =752+164

752+164=916

916-189=727 => 189+727=752+164

b)    +3.055=19.870-14.200

19.870-14.200=5.670

5.670-3.055=2.615 => 2.615+3.055=19.870-14.200

  -1.023=10.125+12.360

10.125+12.360=22.485

22.485+1.023=23.508 => 23.508-1.023=10.125+12.360

  +5.790=41.839-24.517

41.839-24.517=17.322

17.322-5.790=11.532 => 11.532+5.790=41.839-24.517