Jawab:
perbandingan pecahan = p/q
Penjelasan dengan langkah-langkah:
i) pecahan itu = p/q
ii) nilai pecahan = 4/5
p = 4a
q= 5a
iii) pembilang di -12 dan penyebut di + 9 ,nilai pecahan = 4/7
(p- 12) / (q +9) = 4/7
(4a - 12) / (5a +9) = 4/7
7(4a -12) = 4(5a + 9)
28 a - 84 = 20 a + 36
8 a = 120
a = 15
p = 4a = 60
q = 5a = 75
pecahan itu = p/q = 60/75
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Jawab:
perbandingan pecahan = p/q
Penjelasan dengan langkah-langkah:
i) pecahan itu = p/q
ii) nilai pecahan = 4/5
p = 4a
q= 5a
iii) pembilang di -12 dan penyebut di + 9 ,nilai pecahan = 4/7
(p- 12) / (q +9) = 4/7
(4a - 12) / (5a +9) = 4/7
7(4a -12) = 4(5a + 9)
28 a - 84 = 20 a + 36
8 a = 120
a = 15
p = 4a = 60
q = 5a = 75
pecahan itu = p/q = 60/75