25× ( -3) = (25×7)- (25× )

Bab Sifat Distributif
Matematika SD Kelas V

25 x (-3) = (25 x 7) - (25 x a)

-3 = 7 - a
a = 7 + 3
a = 10

maka,
25 x (-3) = (25 x 7) - (25 x 10)

25× ( -3) = (25×7)- (25×...)
25(7-x) = 25*(-3)
7-x= -3
x =10

jadi,

(25*7)-(25*10)