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Elena L [17]
3 years ago
6

Could someone explain to me how to do this!!

Mathematics
1 answer:
valina [46]3 years ago
7 0

Answer:

x=16, y=39

Step-by-step explanation:

to solve y=2x+7

Substitute 2x+7 for y in y=3x−9

y=3x−9

( solve this like a normal problem)  

2x+7=3x−9 (Add -3x to both sides)

-x+7=-9  (Add -7 to both sides)

-x=-16 (Divide both sides by -1)

x=16

Now that you found x you can substitute this in the other problem.

y=3(16)-9

y=39

Hopefully this helped!

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<em>See Attachment for Details ^^</em>

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