BANYAKNYA pita santi 5/7 kali pita daniya
selisih pita merka 6 buah
berapa banyak pita mereka masing masing?
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Selisih = 6
Pita santi = x 6
= 15
Pita Daniya = x 6
= 21
x = 5/7y
x-y = 6
x = y+6
y+6 = 5/7y
y-5/7y = 6
2/7y = 6
2y = 42
y = 21
x = 5/7.21
x = 15