tlg jwbin dong plis

Bab Bilangan Pecahan
Matematika SD Kelas V

(1/2 - 4/5) x (7/8 + 1/2)
= ((5 x 1 - 4 x 2)/(2 x 5)) x (7 x 2 + 1 x 8)/(8 x 2)
= ((5 - 8)/(10)) x (14 + 8)/(16)
= (-3/10) x (22/16)
= -33/80