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if a+1=b+2=c+3=d+4=a+b+c+d+5 what is a+b+c+d?
 

 Jun 22, 2021
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if a+1=b+2=c+3=d+4=a+b+c+d+5 what is a+b+c+d?

 

Hello Dennis!

 

a = d + 3

b = d + 2

c = d + 1

d + 4 =    a    +    b    +    c  + d + 5

d + 4 = d + 3 + d + 2 + d +1+ d + 5

- 3 d = 7

d = - 3/7

a + b + c + d = - 3/7 + 3 - 3/7 + 2 - 3/7 + 1 - 3/7

= - 4 * 3/7 + 6 = - 12/7 + 42/7 = 30/7 = \(4.\overline{285714}\)

laugh  !

 Jun 22, 2021

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