Question

a+b+c=150
a+b=90
b+c=110
a=? B=? C=?

Answer 1

a+b=90 rezulta ca a=90-b
b+c=110 rezulta ca c=110-b
atunci 90-b+110-b=150
-2b=-50
b=25

a+b=90 atunci a=90-25=65
b+c=110 atunci c=110-25=85