You've left out a name.... I'll call her Alice Alice + Brian +
Clive = 4700
Alice = Brian +1000
Clive = Brian - 800 Now, if we put those bits into the first
equation we get.....
(Brian +1000) + Brian + (Brian - 800) = 4700 Remove the brackets
and we have
Brian + 1000 + Brian + Brian - 800 = 4700
Brian + Brian + Brian +200 = 4700
3 times Brian = 4700 - 200
3 times Brian = 4500
Brian = 1500 So now we can see that Alice gets 2500, Brian gets
1500 and Clive gets 700
2500 + 1500 + 700 = 4700