Răspuns:
a) a=2342-245=2097
b. 2478+1345= 3823
c. 152+342+481=1206
a) a+345=2342
a=2342-345
a=1997
b) a-1345=2478
a=2478+1345
a=3823
c) a-(152+342+481)=231
a-975=231
a=975+231
a=1206
