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Byju's Answer
Standard VII
Mathematics
Writing Rational Numbers as Decimals
Express the m...
Question
Express the mixed recurring decimal
15.7
¯
¯¯¯¯
¯
32
in
p
q
form.
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Solution
Let,
x
=
15.7
¯
¯¯¯¯
¯
32
Since there is one digit after decimal and not under the bar, multiply by
10
on both sides.
10
x
=
15.7
¯
¯¯¯¯
¯
32
×
10
10
x
=
157.
¯
¯¯¯¯
¯
32
10
x
=
157
+
0.
¯
¯¯¯¯
¯
32
10
x
=
157
+
32
99
10
x
=
157
×
99
+
32
99
=
15575
99
x
=
15575
990
This is in the form of
p
q
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2
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