isabellaoliver4403 isabellaoliver4403
  • 14-05-2018
  • Mathematics
contestada

i need help with question 2?

i need help with question 2 class=

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brainsornobrainz
brainsornobrainz brainsornobrainz
  • 14-05-2018
the answer selected should be correct.
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pk6896
pk6896 pk6896
  • 14-05-2018
These kind of problems used to really bug me. Keep a cool head and use what you know even though it's letters.
a(c+b)=d
we want to get c alone and everyone else on the other side.
first distribute the a 
ac + ab =d     subtract the ab term from both sides
ac=d-ab          then divide off the a on both sides
c=d-ab/a 
so it looks like the last answer is the one you want.
Answer Link

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