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algebra

posted by on .

Can someone please check my answer?

Rearrange (cp-yd)/(pd)=p+y to make d the subject

OK, I did
cp-yd=pd(p+y)
cp=pd(p+y)+yd
cp=p^d+pdy+yd
factoring out the d
cp=d(p^2+py+y)
cp/(p^2+py+y)=d

  • algebra - ,

    correct! good job

  • algebra - ,

    thanks, wasn't sure whether i could simplify that last line or not

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