1)a+b=106
a/b=4 rest 6
a=4b+6 inlocuim in formula
4b+6+b=106
5b=100
b=20 a=86
2) a-b=200 a/b=3 rest 40
a=3b+40
3b-b+40=200
2b=160
b=80 a=280
3) a+b=300
a=2b
2b+b=300
3b=300
b=100 a=200
4)a+a+1+a+2+a+3=806
4a+6=806
4a=800
a=200
203-200=3 sau mai direct a+3-a=3
Succes la scoala :D
Coronita ?