a fraction becomes 1/3 when 2 is subtracted from the numerator and it becomes 1/2when 1 is subtracted from the denominator . find the fraction
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Answer:
Step-by-step explanation:Let numerator=x
Let denominator =y
So fraction becomes =x/y
ATQ
x-2/y=1/3
3(x-2)=y. (cross multiplying)
3x-2=y
3x-y-2=0
Now ,
x/y-1=1/2
2x=1(y-1)
2x=y-1
2x-y+1=0
Two equations are
3x-y-2=0. eq1
2x-y+1=0 eq2
Subtracting eq1 - eq2
3x-y-2-(2x-y+1)=0
3x-y-2-2x+y-1=0
x-3=0
x=3
Putting value of x in eq1
3×3-y-2=0
9-y-2=0
7-y=0
-y=-7
y=7
Hence the fraction=x/y=3/7
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