dylanseison21 dylanseison21
  • 12-01-2020
  • Mathematics
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p=2(l+b) solve for l

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Аноним Аноним
  • 12-01-2020

p=2(l+b)

multiply the bracket by 2

(2)(l)=2l

(2)(b)=2b

p=2l+2b

move 2b to the other side

sign changes from +2b to -2b

p-2b=2l+2b-2b

p-2b=2l divide both sides by 2

p/2-2b/2=2l/2

cross out 2 and 2 for -2b/2= 1*-1*b=-b

cross out 2l and 2= 1*1*l=l

p/2-b=l

answer:

1=p/2-b

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