Question

determina numerele prime a b care verifică relația 3-a plus 2 b egal cu 16

Answer 1

3-a+2b=16
-a+2b=16-3
-a+2b=13/(-1)
a-2b=-13
a=-13+2b

3-a+2b=16
a=-13+2b
3-(-13+2b)=16
3+13-2b=16
16-2b=16
-2b=0
b=0

a=-13+2b
b=0
a=-13+2*0
a=-13
verificare
3-(-13)+2*0=16
3+13=16
16=16(adevarat/corect)