Factor the expression using the GCF. 70+95

Question

 I do not get it.

Answer 1

70+95

70=2*5*7

95=5*19

70+95=(5*2*7)+(5*19)=(5*14)+(5*19)=5*(14+19)=5*(33)

5*33=165 and 70+95=165 also