Răspunsuri

2014-10-14T17:50:58+03:00
51+a=152
a=152-51
a=101
2014-10-14T17:51:43+03:00
C)35+16+a=152
   51+a=152
   a=152-51
  a=101

d)b-(21+2·16)=77
  b-(21+32)=77
  b-53=77
  b=77+53
  b=130