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svlad2 [7]
3 years ago
14

–8x + 9y = –8 y = –8 substetution Need fast

Mathematics
1 answer:
emmasim [6.3K]3 years ago
5 0
If you substitute the -8 in for y you will get -72
You can then add the 72 to the other side and get -8x=64
Dividing by -8 to both sides to get x alone will give you x
X=-8
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How do you solve this?
geniusboy [140]

Hello from MrBillDoesMath!

Answer:

x = 50


Discussion:

(4x +5) ( 2x - 2) =  8x^2 - 8x + 10x - 10        

                          = 8x^2 + 2x - 10                             (A)


(16x^8)/(2x^6)  + 90 =   8x^2 + 90                           (B)


Setting (A) = (B) gives

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2x = 90 + 10 = 100

Divide both sides by 2:

x = 100/2 = 50




Thank you,

MrB

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Answer:

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