ex.3
a-b=60
a:b=5 r4 a=5*b+4
inlocuim in prima rel. 5*b+4-b=60 4*b=60-4 4*b=56 b=14
a=60+14 a=74
ex.4
a+b+c=235
2a=b
c:b=2 r25 rez.c=2b+25 c=2x2a+25 c=4a+25
inlocuim i prima relatie
a+2a+4a+25=235
7a=235-25
7a=210
a=210:7
a=30
b=30:2 b=15
c=235-30-15 c=190
30+15+190=235
ex.1
10248:x=62 rest 18
x=(10248-18):62
x=165
ex.2
a+b=100
a:b=4 r5
a=4b+5
4b+5+b=100
5b=100-5
5b=95
b=15
ex.3
a-b=43
a:b=8 r1 a =8b+1
8b+1-b=43
7b=43-1
7b=42
b=6
a=43+6
a=49
