if 5x+4y = 23 and 3x-y=7, what is the value of x
Answers
Answered by
1
Answer:
Given equations
3
x
−
4
y
=
−
23
...
...
(
1
)
5
x
+
y
=
−
7
...
...
...
(
2
)
Multiplying (2) by
4
& adding to (1), we get
3
x
−
4
y
+
4
(
5
x
+
y
)
=
−
23
+
4
(
−
7
)
23
x
=
−
51
x
=
−
51
23
setting the value of
x
in (1), we get
3
(
−
51
23
)
−
4
y
=
−
23
4
y
=
23
−
153
23
y
=
376
23
⋅
4
y
=
94
23
Hence the solution is
x
=
−
51
23
,
y
=
94
23
Step-by-step explanation:
hope it helps
Answered by
58
Given,
To Find,
- The value of 'x'.
Solution,
As given,
Solving by Elimination Method,
Multiplying Eq [2] by 4 to make the coefficients of 'y' equal as,
Adding Eq [1] and Eq [3] to eliminate 'y' and Finding the value of 'x' as,
Substituting the value of 'y' in Eq [2] and Finding the value of 'x',
Therefore,
- The values of 'x' and 'y' are 3 and 2 respectively.
Required Answer,
- The values of 'x' and 'y' are 3 and 2 respectively.
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