Question

scrie toate nr naturalestiind ca b=a+c=5

Answer 1

b=a+c=5
a+c=5
b=5

a+c=5=> a={ 1, 2, 3, 4, 5 } c={1, 2, 3, 4, 5}
a=1=> c=5-1, c=4 (semnul,,=>" inseamna rezulta)
a=2=> c=5-2 c=3
a=3=> c=5-3 c=2
a=4=> c=5-4 c=1
a=5=> c=5-5 c=0 (Fals)