Răspunsuri

2014-11-01T22:38:44+02:00
A)a+7=199=>a=192
b)4+b=20=>b=16
a+b=16+192=208
jumatate din suma a +b = 208:2=104
2014-11-01T22:39:33+02:00
A+15-5+a-3-a=199
a+7=199
a=199-7
a=192

36-17+b-15+b=11+19-5-5
2b+4=20
2b=20-4=16
b=16:2
b=8

192+8=200
200:2=100