Respuesta :
we can addd like tersm to get 12x
we can prove it by using distributive property
ab+ac=a(b+c)
7x+5x=x(7)+x(5)=x(7+5)=x(12)=12x
we can prove it by using distributive property
ab+ac=a(b+c)
7x+5x=x(7)+x(5)=x(7+5)=x(12)=12x