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Byju's Answer
Standard XII
Mathematics
Properties of Inequalities
Solve each of...
Question
Solve each of the following system of equations in R.
7. 2x + 5 ≤ 0, x − 3 ≤ 0
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Solution
We
have,
2
x
+
5
≤
0
⇒
2
x
≤
-
5
⇒
x
≤
-
5
2
⇒
x
∈
(
-
∞
,
-
5
2
]
.
.
.
(
i
)
Also
,
x
-
3
≤
0
⇒
x
≤
3
⇒
x
∈
(
-
∞
,
3
]
.
.
.
(
ii
)
Thus
,
the
solution
of
the
given
set
of
inequalities
is
the
intersection
of
(
i
)
and
(
ii
)
.
(
-
∞
,
-
5
2
]
∩
(
-
∞
,
3
]
=
(
-
∞
,
-
5
2
]
Thus
,
the
solution
of
the
given
set
of
inequalities
is
(
-
∞
,
-
5
2
]
.
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1
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