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a] 5 1/4 : 1 1/2 = 21/4 : 3/2 = 21 : 6
b] 75 cm : 2,5 m = 75 cm : 250 cm = 15 : 50 = 3 : 10
c] 150 gram : 3 kilogram = 150 gram : 3000 gram = 1 : 200
d] 250 mililiter : 5 liter =250 mililiter : 5000 mililiter = 1 : 20
kelas 7
= 21/4 x 2/3
= 7/2 = 3 1/2
B) 75 cm : 250
= 75/250 : 25/25
= 3/10 cm
c) 150 gram : 3000 gram
= 150/3000 : 150/150
= 1/20 gram
d) 250 mL : 5000 mL
= 1/20 mL