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guajiro [1.7K]
3 years ago
6

What would the answer be for this equation 7x/20 - 5x/12

Mathematics
1 answer:
polet [3.4K]3 years ago
4 0

Answer:

\frac{1}{15} x

Step-by-step explanation:

\frac{7x}{20}  -  \frac{5x}{12}

\frac{3 \times 7x}{3 \times 20}  -  \frac{5 \times 5x}{5 \times 12}

\frac{21x}{60}  -  \frac{25x}{60}

\frac{21x - 25x}{60}  = (21 - 25)x =  - 4x

\frac{ - 4x}{60}  =  -  \frac{ x}{15}

\boxed{\green{=  \frac{1}{15} x}}

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26.35 x 21.5 how do you multiply it
svetlana [45]

Answer:

Step by step explanation: OK so your question is 26.35×21.5 so that is pretty easy but if you do not know that you are in the right place so what you’re gonna do is if you have a calculator then you need to take that out if you don’t then I’m going to need a piece of paper now for me it’s easy because I have a calculator and you can find a calculator on your iPad your phone etc. but yeah so you’re gonna type in 26.35 Times 21.5 now I want u do that on your own once you type in those numbers you’re going to hit the = and it’s that simple and you’ll then get your answer so I hope that helped you to learn how you multiply those the numbers.

6 0
3 years ago
Why don't linear equations have extraneous solutions
Scrat [10]
Linear equations do have extraneous solutions
8 0
4 years ago
Carl and Dennis are brothers. The sum of their ages is 29. In 6 years' time Carl will be the same age as Dennis was 3 years ago.
lorasvet [3.4K]

Carl present age is 10 years while Dennis present age is 19 years.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Let x represent Carl present age and y represent Dennis present age, hence:

x + y = 29   (1)

Also:

After 6 years:

x + 6 = y - 3   (2)

From both equations:

x = 10, y = 19

Carl present age is 10 years while Dennis present age is 19 years.

Find out more on equation at: brainly.com/question/2972832

4 0
2 years ago
Help Help me Help me Help me Help me Help me \
mr Goodwill [35]

I think it makes it more easier if you simplify the inequality.

4x + 20 < 40        First subtract 20 on both sides

4x + 20 - 20 < 40 - 20

4x < 20     DIvide 4 on both sides to get the variable "x" by itself

x < 5    [x is less than 5, so x represents the numbers that are less than 5]

[Note:

If the sign is < or >, you use an open circle.

If the sign is ≤ or ≥, you use a closed circle.]

Your answer is the 1st option because the solution is any number that is less than 5

3 0
3 years ago
Which side corresponds to angle ABC
Kay [80]

Answer:

C. CA

Step-by-step explanation:

The side that corresponds to angle ABC, is the side that is opposite to the vertex B.

From the figure given, side CA is directly opposite to vertex B.

Therefore, CA corresponds to angle ABC.

5 0
3 years ago
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