find.Q+5+ b 는 특 은 두 ?
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find.Q+5+ b 는 특 은 두 ?

Railway Exams
Maths
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( frac{a}{b+c}=frac{5}{7} cdot frac{a+c}{b}=frac{5}{4} ) ( 7 a=56+5 c ) ( 5 b=7 a-5 c ) ( 7 a-5 c=4 a+4 c ) ( 7 a-4 a=4 c+5 c ) ( 3 a=9 c ) ( [a=3 c ) ( 40 times 3 c+4 c=56 ) ( 12 c+4 c=56 ) ( 16 c=5 b ) ( b=frac{16}{5} c ) ( =frac{31 c^{c}}{c} ) ( frac{a+b}{c}=3 c+frac{16}{5} c ) ( frac{51}{c}=frac{31}{5} )
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