Question

Tolong kawan2. kawan2 yang jago mate smp tlg bantu yaa
Jika p:q= 4:5 dan p+q=36,maka p-q= (?)
tolong bantu kawan sekalian rumusnya yaa :)

Answer 1

Answer 2

P : q = 4 : 5
5p = 4q

p + q = 36 (kalikan 4)
4p + 4q = 144
susbtitusi 4q = 5p:
4p + 5p = 144
9p = 144
  p = 144/9 = 16
  q = 80/4 = 20

p - q = 16 - 20 = - 4