Question

aflati toate numerele a si b care satisfac egalitatea (a-1)×(1+b)=10

Answer 1

(3-1)x(1+4)=10
2x5=10(a=3,b=4)
(6-1)x(1+1)=10
5x2=10(a=6,b=1)
(11-1)x(1+0)=10
10x1=10(a=11,b=0)
(2-1)x(1+9)=10
1x10=10(a=2,b=9)