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trapecia [35]
3 years ago
15

How to solve this 2x+x-4y

Mathematics
2 answers:
Andrei [34K]3 years ago
6 0

Answer:

3x-4y

Step-by-step explanation:

2x+x-4y

If a <u>term</u> doesn't have a <u>coefficient</u> , it is considered that the coefficient is 1

2x+1x-4y

Why is it considered that the coefficient is 1?

Remember that any term multiplied by 1 remains the same:

1.x=x

Step 1

The equality can be read in the other way as well , so any term can be written as a product of 1 and itself:

x=1 . X \\

Step 2

Usually, we don't need to write multiplication sign between the coefficient and the variable , so the simpler form is:

x=1x

That is why we can write the term without the coefficient as a term with coefficient 1.

Let's go back to your problem now

Collect l<u>ike terms </u>by adding their <u>coefficients</u>

(2+1)x-4y

Add the numbers

3x-4y

PLEASE MARK ME AS BRAINLIEST

sineoko [7]3 years ago
5 0

Answer:

Combine like terms

2 + − 4

3x − 4y

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timofeeve [1]

Answer:

1

Step-by-step explanation:

-3x+9=3(2x+3)+3(x-4)+1

Distributive property in the parenthesis

-3x+9=6x+9+3x-12+1

Combine Like Terms

-3x+9=9x-2

Get the x’s on one side

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Answer:

The number of red circles to be added would be equal to 8 times the original amount of red circles

Step-by-step explanation:

Let

x ----> the number of red circles

y ----> the number of blue circles

Originally

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y=3x ----> equation A

How many more circles would need to be added to make the ratio of red to blue 3:1

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substitute equation A in equation B

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therefore

The number of red circles to be added would be equal to 8 times the original amount of red circles

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