SOLUTION: if the sum of b,c, and two times a is three times the sum of a minus b and a minus c, then a=

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Question 1095026: if the sum of b,c, and two times a is three times the sum of a minus b and a minus c, then a=
Answer by Boreal(15235) About Me  (Show Source):
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b+c+2a=3{(a-b)+(a-c)}=3(2a-b-c)=6a-3b-3c
2a+b+c=6a-3b-3c
4a=4b+4c
a=b+c
check
b+c+2b+2c=3{(b+c-b)+(b+c-c)}=3(c+b)
3b+3c=3c+3b