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Let’s check out your problem:
Subtract.
\newline
1
4
−
1
2
=
\frac{1}{4} - \frac{1}{2} =
4
1
−
2
1
=
_____
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Math Problems
Grade 7
Add and subtract rational numbers
Full solution
Q.
Subtract.
\newline
1
4
−
1
2
=
\frac{1}{4} - \frac{1}{2} =
4
1
−
2
1
=
_____
Identify LCD:
Identify the least common denominator for the
fractions
1
4
\frac{1}{4}
4
1
and
1
2
\frac{1}{2}
2
1
. The denominators are
4
4
4
and
2
2
2
. The least common denominator is
4
4
4
.
Convert to
1
4
\frac{1}{4}
4
1
:
Convert
1
2
\frac{1}{2}
2
1
to a
fraction
with the denominator
4
4
4
.
\newline
1
2
\frac{1}{2}
2
1
is equivalent to
2
4
\frac{2}{4}
4
2
.
Subtract Fractions:
Subtract the fractions.
1
4
−
2
4
=
−
1
4
\frac{1}{4} - \frac{2}{4} = -\frac{1}{4}
4
1
−
4
2
=
−
4
1
.
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x
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\newline
30.4
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30.4-40.4
30.4
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40.4
\newline
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Question
Solve for
n
n
n
and simplify your answer.
\newline
−
6
=
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n
-6=\frac{2}{3} n
−
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n
\newline
Answer:
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3
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Question
A local package delivery service wants to improve the efficiency of its deliveries. As a first step, the management team decides to conduct a study to determine the average length of time from the arrival of a package at the company's mail center until its delivery at a home. Which of the following methods is most likely to produce valid results?
\newline
Choose
1
1
1
answer:
\newline
(A) The team selects the
1
,
000
1,000
1
,
000
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\newline
(B) The team calls
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1
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\newline
(C) The team selects a random sample of
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\newline
(D) None of the above
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(
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Question
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c
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1
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(
l
b
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l
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1
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b
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\newline
(Round the answer to the nearest whole number.)
\newline
□
\square
□
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Posted 9 months ago
Question
Multiply:
\newline
−
0.1
×
−
2
5
=
-0.1 \times \frac{-2}{5}=
−
0.1
×
5
−
2
=
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