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Let’s check out your problem:
Which of the following is a solution to the inequality below?
\newline
−
16
l
t
;
x
5
\begin{array}{r} -16<\frac{x}{5} \end{array}
−
16
lt
;
5
x
\newline
x
=
−
140
x=-140
x
=
−
140
\newline
x
=
−
85
x=-85
x
=
−
85
\newline
x
=
−
35
x=-35
x
=
−
35
\newline
x
=
−
130
x=-130
x
=
−
130
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Math Problems
Grade 8
Solutions to inequalities
Full solution
Q.
Which of the following is a solution to the inequality below?
\newline
−
16
<
x
5
\begin{array}{r} -16<\frac{x}{5} \end{array}
−
16
<
5
x
\newline
x
=
−
140
x=-140
x
=
−
140
\newline
x
=
−
85
x=-85
x
=
−
85
\newline
x
=
−
35
x=-35
x
=
−
35
\newline
x
=
−
130
x=-130
x
=
−
130
Substitute
x
=
−
85
x = -85
x
=
−
85
:
Step
1
1
1
: Substitute
x
=
−
85
x = -85
x
=
−
85
into the inequality -16 < \frac{x}{5}.
\newline
Calculate: -16 < \frac{-85}{5}
\newline
-16 < -17
Check
x
=
−
85
x = -85
x
=
−
85
:
Step
2
2
2
: Since
−
16
-16
−
16
is not less than
−
17
-17
−
17
,
x
=
−
85
x = -85
x
=
−
85
is not a solution.
Substitute
x
=
−
35
x = -35
x
=
−
35
:
Step
3
3
3
: Substitute
x
=
−
35
x = -35
x
=
−
35
into the inequality -16 < \frac{x}{5}.
\newline
Calculate: -16 < \frac{-35}{5}
\newline
-16 < -7
Check
x
=
−
35
x = -35
x
=
−
35
:
Step
4
4
4
: Since
−
16
-16
−
16
is less than
−
7
-7
−
7
,
x
=
−
35
x = -35
x
=
−
35
is a solution.
Substitute
x
=
−
130
x = -130
x
=
−
130
:
Step
5
5
5
: Substitute
x
=
−
130
x = -130
x
=
−
130
into the inequality -16 < \frac{x}{5}.
\newline
Calculate: -16 < \frac{-130}{5}
\newline
-16 < -26
Check
x
=
−
130
x = -130
x
=
−
130
:
Step
6
6
6
: Since
−
16
-16
−
16
is not less than
−
26
-26
−
26
,
x
=
−
130
x = -130
x
=
−
130
is not a solution.
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\newline
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\newline
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\newline
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\newline
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\newline
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