Question

afla toate perechile de numerele naturale a si b care verifica egalitatile urmatoare: a*b+a=6 a*b+b=5 a*b+a_2=2 a*b+b=5

Answer 1

a)1×5+1=5+1=6
2×2+2=4+2=6
3×1+3=3+3=6
b)0×5+5=0+5=5
4×1+1=4+1=5
c)2×1+2-2=2+2-2=4-2=2
1×3+1-2=3+1-2=4-2=2
d)2×1+1+2=2+3=5
0×3+3+2=0+5=5