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2014-03-10T16:32:31+02:00
A+b=380
a=bx2
b=a-5
bx2=a-5
a=bx2+5
bx2+5+b=380
bx3=380-5
bx3= 375
b=375:3
b= 125
a+125=380
a=380-125
a= 255
PROBA:255+125=380