Respuesta :
since you are given x then x=5
now you plug in x into the equation which is
2(5)+y=10
which equals to 10+y=10
minus 10 on both sides to get y by itself
y=10-10
y=0
now you plug in x into the equation which is
2(5)+y=10
which equals to 10+y=10
minus 10 on both sides to get y by itself
y=10-10
y=0