jika hasil5 kali (15+20)=(5kali15)+(5kali n) maka nilai n adalah pake cara yah

5×(15+20)=(5×15)+(5×20)=75+100=175.

5 x (15 + 20) = 5 x 25 = 125
(5 x 15) + ( 5 x n ) = 125
n = (125 - (5 x 15)) : 5 = 50 : 5 = 10