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kirstykingdom
kirstykingdom kirstykingdom
  • 19-05-2016
  • Mathematics
Answered

i need help with some maths homework what is the answer 3(x-3)=0

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AshleyannMarie
AshleyannMarie AshleyannMarie
  • 19-05-2016

you would  have to use distributive property. it would come out to 3x-9=0 then you would add 9 to -9 and 0. It would then be 3x=9. You would then divide 9 and 3x by 3x. You will get x=3.

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apologiabiology
apologiabiology apologiabiology
  • 19-05-2016

if xy=0
assume that at least x or y=0

3(x-3)=0
therefor
3=0 or x-3=0
3=0 is false
therefor
x-3 mus equal zero
x-3=0
add 3 to both sides
x=3

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