Răspunsuri

2014-06-03T18:23:27+03:00
A +b = 195
a+75 = b  +40
a = b - 35
b -35 +b = 195
2b = 230
b = 115
a = 195 -115
a = 80
1 5 1
2014-06-03T18:26:47+03:00
A+b=195
a+75=b+40
a=195-b inlocuim pe a 195-b+75=b+40  195+75-40=b+b   230=2b  b=230:2  b=115
a=195-b
a=195-115
a=80
proba: 80+115=195 sau  80+75=115+40