David W. answered 10/04/18
Tutor
4.7
(90)
Experienced Prof
90 x 25
a*(b+c) = a*b + a*c
Choose a "convenient value" like 90 = 100 - 10
90*25 =
25*90 =
25*(100-10) =
2500 - 250 =
2250
25*(100-10) =
2500 - 250 =
2250