jmlh perbandingan 3+8=11
a+b = 77
a= 3/11 x 77 =21
a= 8/11 x 77 =56
a/b = 21/56
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3/8 = x / 77-x
3(77-x) = 8x
231 - 3x = 8x
-3x - 8x = -231
- 11x = -231
x = -231 / -11
= 21
jadi pembilang = x = 21
penyebut = 77-x = 77-21 = 56
Jadi pecahan tersebut 21/56
jmlh perbandingan 3+8=11
a+b = 77
a= 3/11 x 77 =21
a= 8/11 x 77 =56
a/b = 21/56