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Katyanochek1 [597]
3 years ago
15

2 7th grade math questions!!!! EARN 20 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!! PLEASE HELP!!!!!! ILL GIVE BRAINLIST!!!!!!!!!!

Mathematics
1 answer:
Rasek [7]3 years ago
3 0
15 I think but don’t know
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Can someone solve 5 + 2x = + 6<br><br> and n - 3n = 14 - 4n<br><br> and 7 ( 5a - 4 ) - 1 = 14 - 8a
professor190 [17]

Answer:

5 + 2x = 6

2x = 6-5

2x = 1

x = 0.5

n -3n = 14 -4n

-2n = 14-4n (since 4n is negative, change the sign to make it positive and then add 4n to both sides of the equation)

2n = 14

n = 7

7 (5a - 4) - 1 = 14 - 8a

35a - 28 - 1 = 14 -8a

35a -29 = 14 - 8a

43a = 43

a = 1

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18/40 = 27/60

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