anonymous
  • anonymous
A two-digit number is 7 times the sum of its digits. The tens digit is 3 more than the units digit. What is the number?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
So I'm thinking our first equation will be: xy=7(x + y)
anonymous
  • anonymous
10x+y=7(x+y) x=y+3.Now solving them
Diyadiya
  • Diyadiya
Oh wait

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anonymous
  • anonymous
The number is not xy @algebraprobs it is 10x+y
anonymous
  • anonymous
Oh......oh yeah because it is in the tens place!
Diyadiya
  • Diyadiya
Yes @pavankumartgpk is absolutely Right Sorry about that!@algebraprobs
anonymous
  • anonymous
Now you also have x=y+3 right.So substituting x=2y here gives 2y=y+3 so y=3 and x=6
anonymous
  • anonymous
Number is 63
anonymous
  • anonymous
Thanks! : )

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