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2 years ago

3x−1−(x+3)=1 PLEASE HELP IDK HOW TO DO IT

Mathematics

2 answers:

torisob [31]2 years ago

7 0

Answer:

x = 5/2

x = 2 1/2

x = 2.5

Step-by-step explanation:

3x - 1 - (x + 3) = 1

3x - 1 - x - 3 = 1

2x - 1 - 3 = 1

2x - 4 = 1

2x = 1 + 4

2x + 5

2x = 5

x = 5/2 → 2 1/2 → 2.5 ( can be written in any of these forms depending on what you need to do)

<em>Hope this helped! :)</em>

Allisa [31]2 years ago

5 0

Answer:

Step-by-step explanation:

3x−1−(x+3)=1

<u>First remove the bracket</u>

That's

3x - 1 - x - 3 = 1

<u>Group the constants at the right side of the equation</u>

That's

3x - x = 1 + 1 + 3

Simplify

We have

2x = 5

Divide both sides by 2

That's

2x / 2 = 5/2

Hope this helps you

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Answer:

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Step-by-step explanation:

Let's modified the equations and find the answer.

Using the first equation:

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$4x=2y+10$

Considering the second equation:

$=4x+ky=2$

Taking into account that from the first equation we know that: $4x=2y+10$ , we can express the second equation as:

$2y+10+ky=2$ , which can be simplified as:

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$(2+k)y=-8$

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Because (-8) is being divided by (2+k), then (2+k) can't be equal to 0, so:

$2+k=0$ if $k=-2$

This means that k can be any number different than -2, and for each of these solutions, there is a different solution for y, allowing also, different solutions for x.

For example, if k=0 then

$y=-8/(2+0)$ which give us y=-4, and, because:

$4x=2y+10$ if y=-4 then $x=(-8+10)/4=0.5$

Now let's try with k=-1, then:

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nataly862011 [7]

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Finger [1]

Answer:

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