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rosijanka [135]
3 years ago
6

2x + 5 = 13 what is x

Mathematics
2 answers:
yKpoI14uk [10]3 years ago
4 0

Answer:

4

Step-by-step explanation:

13 - 5 = 8

2 x 4 = 8

8 + 5 = 13

valkas [14]3 years ago
3 0

Answer:

x = 4

Step-by-step explanation:

<em>it's important to keep in mind that you can do anything to an equation as long as you do it to both sides, and it will still be equal.</em>

2x + 5 = 13

<em>subtract 5 from both sides of the equation</em>

2x + 5 -5 = 13 - 5

2x = 13 -5

2x = 8

<em>divide both sides of the equation by 2</em>

2x/2 = 8/2

x = 4

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Answer:

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Step-by-step explanation:

6 0
3 years ago
An electrolyte solution has an average current density of 111 ampere per square decimeter \left( \dfrac{\text{A}}{\text{dm}^2}\r
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Step-by-step explanation:

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6 0
4 years ago
Please help me with algebra!<br> Don't answer if you don't know how to do it.
astra-53 [7]
This is all a bit complicated so try and stick with me on this one!

This one is the first problem in the first picture! a + 2 / a^2 + a - 1 / a + 1/ -a^2 - 2a - 1

= a^4 + a^3 - a^2 -  a / -a^5 - 3a^4 - 3a^3 - a^2

= -a^3 - a^2 + a + 1 / a^4 + 3a^3 + 3a^2 + a

= -a^3 - a^2 + a + 1/ a^4 + 3a^3 + 3a^2 + a

= (-a - 1) (a + 1) (a - 1) / a(a+ 1) (a + 1) (a + 1)

= -a + 1 / a^2 + a


The second problem in the first picture! 3x / y + 3x - y^2 / 3xy - 9x^2 + y^2 + 9x^2 / y^2 - 9x^2

= -81x^4y + 18x^2y^3 - y^5 / 243x^5 - 54x^3y^2 + 3xy^4


This one is for the last picture! 4y^2 + 4y + 1 / 4y - 8y^2 - 4y^2 + 1 / 4y + y 

= 16y^3 + 24y^2 / -32y^3 + 16u^2

= 16y + 24 / -32y + 16

= 2y + 3 / -4y + 2

I hope this was helpful!!!

Please remember to rate/thank/mark as brainliest if you see fit! (:



3 0
4 years ago
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