JacksonChristophe567 JacksonChristophe567
  • 29-03-2015
  • Mathematics
Answered

jill is thinking of two numbers. they have the sum of 27 and a difference of 7. what are the two numbers?

Answer :

Аноним Аноним
  • 29-03-2015
17 and 10/ 17+10=27 17-10=7
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dannielle
dannielle dannielle
  • 29-03-2015
a+b=27
a-b=7 
if we sum these
a+b+a-b=27+7=34
2a=34 ⇒ a=34/2 ⇒a=17
b=27-a=27-17 ⇒ b=10
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