Question 1087068
Giving the answer first in case you'd like to continue to work it out yourself
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Answer:  {{{ highlight(-2) }}} , {{{ highlight(25)}}}, and {{{highlight( 59) }}} 
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Workout:
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A + B + C  = 82     (1)
A + B  = C + 86     (2)
C = A - 61          (3)


I chose to substitute "C+86" from (2) as "A+B" in (1):

(C + 86) + C = 82  ==>  2C = -4 ==>   C = -2

Plugging this result into (3) gives  A = 59
Plugging the newly found A & C values into (1) or (2) gives  B = 25

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Check:  A + B + C = 59 + 25 - 2 = 82   (ok)
             A + B = 59 + 25 = 84   and    C + 86 = -2 + 86 = 84    (ok)
             C = -2   and     A-61 = 59-61 = -2  (ok)




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