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3 years ago

7

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

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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