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Gnoma [55]
3 years ago
7

3x+1+5x=7+15+7x what is x?

Mathematics
2 answers:
LenKa [72]3 years ago
3 0

Answer: x=21

Step-by-step explanation:

To solve for x you must first combine you like terms on each side of the equal sign. So you problem will become 8x+1=22+7x. Then get your x on one side and your numbers on the other by taking the one away from the right side and 1 away from 22. Then take away 7 from the left side to cancel it out. Then take 7x away from 8x to leave you with x. making your answer x=21

user100 [1]3 years ago
3 0

Answer:

<h2>x = 21</h2>

Step-by-step explanation:

3x + 1 + 5x = 7 + 15 + 7x          <em>combine like terms</em>

(3x + 5x) + 1 = (7 + 15) + 7x

8x + 1 = 22 + 7x            <em>subtract 1 from both sides</em>

8x = 21 + 7x           <em>subtract 7x from both sides</em>

x = 21

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2 years ago
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2

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Read 2 more answers
11. What is the remainder if x2- 7x - 4 is divided by x<br> - 2? a. 4 b. -14 c. 2 d. -2
Likurg_2 [28]
<h2>Solving for the Remainder with the Remainder Theorem</h2><h3>Answer:</h3>

-14

<h3>Step-by-step explanation:</h3>

Given:

x^2 -7x -4 divided by x -2.

<em>Please refer to my Answer from this Questions to know more about the Remainder Theorem:</em>

  • <em><u>brainly.com/question/24591570</u></em>
  • <em><u>brainly.com/question/24591554</u></em>
  • <em><u>brainly.com/question/24655500</u></em>

Let P(x) = x^2 -7x -4 so that when we divide P(x) by x -\blue 2 the remainder will be P(\blue 2) according to the Remainder Theorem.

Solving for P(2):

P(\blue 2) = (\blue 2)^2 -7(\blue 2) -4 \\ P(\blue 2) = 4 -7(\blue 2) -4 \\ P(\blue 2) = 4 -14 -4 \\ P(\blue 2) = -14

The remainder is -14.

5 0
3 years ago
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