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weeeeeb [17]
3 years ago
12

Lcm and gcf of 27 and 45

Mathematics
1 answer:
miss Akunina [59]3 years ago
5 0
Gcf: 9

27: 1, 3, 9, 27
45: 1, 3, 5, 9, 15, 45

lcm: 135

27, 54, 81, 108, 135,

45, 90, 135,
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This question is super hard for me, and I really need some help please! The Question is in the attatchtment
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Answer:

x=40

Step-by-step explanation:

Because every triangle's angles add up to 180 degrees, you know 3x+x+20=180. Since 3x and x are like terms, you can add them to get 4x. 20 and 180 are also like terms. However, to move your 20 to the side of 180, you need to subtract it. So you have 4x=160. To get x by itself, you divide 4x and 160 by 4. 4x/4 is x, and 160/4 is 40. So your answer is x=40.

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Rent me $250 washing cars with his mobile car wash company he charges $70 per car and earn $50 in tips write an equation to repr
Zarrin [17]

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Read 2 more answers
2x + 3y = 7 3x + 2y = 8
Kipish [7]

Answer:

\boxed{\sf \ \ \ x=2, \ \ y =1 \ \ \ }

Step-by-step explanation:

Hello,

Pls post the full question next time so that we can make sure what is expected.

I assume that you want to solve for (x,y)

   (1) 2x + 3y = 7

   (2) 3x + 2y = 8

2*(2)-3*(1) gives

2*3x + 2*2y - 3*2x - 3*3y = 2*8 - 3*7 = 16 - 21 = -5

6x - 6x + 4y -9y = -5

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y = 1

and we can replace in (1)

2x + 3*1 = 7

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x = 2

hope this helps

7 0
3 years ago
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