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Sever21 [200]
3 years ago
13

Given that 2x+7=27 and 3x+1=28, does 2x+7=3x+1?

Mathematics
2 answers:
brilliants [131]3 years ago
4 0
Nooooo, since 27 does not equal 28
Neko [114]3 years ago
3 0
No by the power of substitution you can take 2x+7 and make it 27 and then 3x+1 and make it 28 and 27 does not equal 28
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ii)
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iv)

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so 4a+8b=17

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a=5/4

Answer :

Plan A lasts 5/4=1.25 h
Plan B lasts 3/2=1.5 h


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