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Alinara [238K]
3 years ago
5

!!!100 POINTS!!! PLEASE HELP! (I WILL GIVE BRAINLIEST)

Mathematics
1 answer:
taurus [48]3 years ago
4 0

Answer:

#13: 7   Not sure for 15

Step-by-step explanation:

[3x-6]=15

    +6   +6

3x=21

divide by 3 on both sides

x=7

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Step-by-step explanation:

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Ratling [72]

Answer:

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Step-by-step explanation:

It is 9 because 1/2 goes into 3, 6 times, and then 3/4 divided by 1/2 is 1 1/2 so 1/2 goes into 3/4 1/12 times, so then figure out how mnay 1/2 is in 1 1/2 and youll get 3 so 6 plus 3 equals 9 :)

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3 years ago
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My name is Ann [436]

Answer:

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Step-by-step explanation:

multiply the second equation by -1 and add the first equation to eliminate "x"

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5 0
2 years ago
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KonstantinChe [14]

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