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Byju's Answer
Standard X
Mathematics
Elimination Method of Finding Solution of a Pair of Linear Equations
If 12x +17y...
Question
If
12
x
+
17
y
=
48
and
17
x
+
12
y
=
68
, then find
x
−
y
.
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Solution
Given
12
x
+
17
y
=
48.....
×
12
17
x
+
12
y
=
68.....
×
17
144
x
+
204
y
=
576
289
x
+
204
y
=
1156
−
145
x
=
−
580
x
=
4
substitute
x
value in the 1st equation
12
×
4
+
17
y
=
48
48
+
17
y
=
48
17
y
=
0
then
x
−
y
=
4
−
0
=
4
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0
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