Question

GOF and DISERBUHVE PROPERE25 + 20

Answer 1

the given expression is

= 25 + 20

now we can break these numbers'

$=5\times5+5\times4$

(we know that 5 x 5 = 25

and 5 x 4 = 20)

now we can take greatest common factor 5 as common, then

$\begin{gathered} =5\times(5+4) \\ =5\times9 \\ =45 \end{gathered}$

so the answer is 45