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Byju's Answer
Standard VII
Mathematics
Forming Equation from Solution
solve by elim...
Question
solve by elimination method 3x -7y = 2:2x + 14y =20.
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Solution
The
given
system
of
equations
is
:
3
x
-
7
y
=
2
.
.
.
.
1
2
x
+
14
y
=
20
.
.
.
.
.
2
Multiply
1
by
2
,
we
get
6
x
-
14
y
=
4
.
.
.
.
3
Adding
2
and
3
,
we
get
8
x
=
24
⇒
x
=
3
Put
x
=
3
in
1
,
we
get
3
×
3
-
7
y
=
2
⇒
-
7
y
=
2
-
9
⇒
-
7
y
=
-
7
⇒
y
=
1
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