Răspuns :
Răspuns:
a=b+3
(a+b) : (a-b) = 21
(b+3+b) : (b+3-b) = 21
(2b+3) : 3 = 21
2b+3 = 21×3
2b+3 = 63
2b=63-3
2b=60
b=30
a=33
34+3×30=
34+90=
124
Răspuns:
a=b+3
(a+b) : (a-b) = 21
(b+3+b) : (b+3-b) = 21
(2b+3) : 3 = 21
2b+3 = 21×3
2b+3 = 63
2b=63-3
2b=60
b=30
a=33
34+3×30=
34+90=
124