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Standard VIII
Mathematics
Question
Find the value of the unknown variable from the given equation
7
x
=
56
2
−
49
2
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Solution
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7
x
=
56
2
−
49
2
or,
7
x
=
(
56
+
49
)
(
56
−
49
)
or,
7
x
=
7
×
105
Comparing both sides,
x
=
105
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