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postnew [5]
2 years ago
8

Please help me answer these 2 questions, worth lots of points

Mathematics
1 answer:
alexgriva [62]2 years ago
7 0
For the first one, to find x, you are going to take that entire side which would equal to 180 and solve. 2x+20+55=180 would then go down to 2x+65=180 once you add the 20 and 55. Then subtract 65 to both sides and divide your final answer 115/2 which is x=57.5. For the second one it’s 4x-2+21=180, then you will subtract 2 from 21 and get 19. After you would subtract 19 by 180 and divide 4 by each side, getting x=40.25 as your final answer.
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We can list out each of the numbers' prime factors first before deciding their greatest common factor.

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As you can see the bolded parts, these are the common factors of the two numbers. To find the greatest common factors, we just have to multiply all their common factors together.  

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