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Anni [7]
3 years ago
15

How do you do a subtraction fraction

Mathematics
2 answers:
NemiM [27]3 years ago
8 0

3/4−2/5=7/20

Solution with Steps

3/4−2/5=?

The fractions have unlike denominators. First, find the Least Common Denominator and rewrite the fractions with the common denominator.

LCD(3/4, 2/5) = 20

Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal the LCD. This is basically multiplying each fraction by 1.

(3/4×5/5)−(2/5×4/4)=?

Complete the multiplication and the equation becomes

15/20−8/20=?

The two fractions now have like denominators so you can subtract the numerators.

Then:

15−8/20=7/20

This fraction cannot be reduced.

Therefore:

3/4−2/5=7/20

Solution by Formulas

Apply the fractions formula for subtraction, to

3/4−2/5

and solve

(3×5)−(2×4)/4×5

=15−8/20

=7/20

Therefore:

3/4−2/5=7/20

Airida [17]3 years ago
5 0

Answer:

divide top from bottom

Step-by-step explanation:

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valina [46]

Answer:

\{5,8\} is a subset of \{2,5,8\}

Step-by-step explanation:

Required

Difference between subset and proper subset

To answer this question, I will use the following illustration.

A = \{1,2,3\}

B = \{2,3\}

C = \{1,2,3\}

In the above sets, set B is a proper subset of set A because all elements of B can be found in A, but not element of A can be found in B.

Set C is a subset of A because A = C

Using the above illustration, we have:

\{5,8\} and \{2,5,8\}

\{5,8\} is a subset of \{2,5,8\}, because 5 and 8 are in \{2,5,8\} but 2 which ca be found in \{2,5,8\} is not in \{5,8\}

8 0
2 years ago
24 points plz help me:Katie had 300 pencils she gave 45 of her pencils to Kim what percent of the pencils did Kim get.. ?plz hel
lutik1710 [3]

Answer:

15%

Step-by-step explanation:

300 / 3 = 100

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3 0
3 years ago
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Given the line with equation 7 − 2 = 8,
timurjin [86]

Hey there!!

The basic slope-intercept formula :

y = mx+ b where ' m ' is the slope and ' b ' is the slope-intercept.

Given equation : 7x - 2y = 8

We will have to isolate the ' y '

... 7x - 2y = 8

Subtract 7x on both sides

... -2y = -7x + 8

Divide by - 2 on both sides

... y = ( 7x / 2 ) - 4

Hence,

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y-intercept = ( 0 , -4 )

Hope it helps!!

4 0
3 years ago
What is an exponent for 147
Yuri [45]
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Answer question 4 please?
Grace [21]

Answer:

8

Step-by-step explanation:

Sides AB and AC are equal

So,

3x - 5 = 7

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divide both sides by 3

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Now take the 2x and plug in x for 4.

2(4) = 8

Final answer is 8.

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3 years ago
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