Respuesta :

a+b=3
-b+c=3 if we add these two equations we have a+c=6......(4) and from the 3rd equation we have a+2c =10
Now subtract (4) from (3)
a+2c=10
a+c=6 so a cancels out you have c=4 so a is 2 and b is 1
 a=2
b=1
c=4

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