Question

va rooog!
putin ajutor

Answer 1

[a,b]*(a,b)=a*b
150*(a,b)=750
(a,b)=750:150
(a,b)=5

Answer 2

$[a,b]*(a,b)=a*b$
$[a,b]=150~ si~ a*b=750$
$150*(a,b)=750$
$(a,b)=750:150$
$(a,b)=5$