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Byju's Answer
Standard IX
Mathematics
Elimination Method
Solve for x...
Question
Solve for
x
and
y
3
2
x
+
5
3
y
=
7
and
9
x
−
10
y
=
14
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Solution
6
×
3
2
x
+
5
3
y
=
7
⟹
9
x
+
10
y
=
42
Adding both the equations
18
x
=
56
⟹
x
=
28
9
y
=
7
5
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1
Similar questions
Q.
Evaluate for
x
and
y
3
2
x
+
5
3
y
=
7
9
x
−
10
y
=
14
Q.
On comparing the ratios
a
1
a
2
,
b
1
b
2
and
c
1
c
2
, find out whether the following pair of linear
equations are consistent, or inconsistent.
(i)
3
x
+
2
y
=
5
;
2
x
−
3
y
=
7
(ii)
2
x
−
3
y
=
8
;
4
x
−
6
y
=
9
(iii)
3
2
x
+
5
3
y
=
7
;
9
x
−
10
y
=
14
(iv)
5
x
−
3
y
=
11
;
−
10
x
+
6
y
=
−
22
(
v)
4
3
x
+
2
y
=
8
;
2
x
+
3
y
=
12
Q.
Solve the following equations.
(1) 17p − 2 = 49
(2) 2m + 7 = 9
(3) 3x + 12 = 2x − 4
(4) 5(x − 3) = 3(x + 2)
(5)
9
x
8
+ 1 = 10
(6)
y
7
+
y
-
4
3
= 2
(7) 13x − 5 =
3
2
(8) 3(y + 8) = 10(y − 4) + 8
(9)
x
-
9
x
-
5
=
5
7
(10)
y
-
4
3
+ 3y = 4
(11)
b
+
(
b
+
1
)
+
(
b
+
2
)
4
= 21
Q.
Solve for
x
and
y
, if
x
+
y
=
7
and
2
x
+
3
y
=
18
.
Q.
Solve the following linear equations for
x
and
y
3
x
+
2
y
=
5
2
x
−
3
y
=
7
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