SOLUTION: Linear systems of equations x+y=11 x-y=10 where x= y=

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Linear systems of equations x+y=11 x-y=10 where x= y=      Log On


   

Question 19589: Linear systems of equations
x+y=11
x-y=10
where
x=
y=
Answer by rahman(247) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=11
x-y=10
--------+
2x=21
x=21%2F2
x=10%261%2F2
Substitute x=21%2F2 to x+y=11
x+y=11
21%2F2%2By=11
y=11-21%2F2
y=22%2F2-21%2F2
y=%2822-21%29%2F2
y=1%2F2
Thus, x=10%261%2F2 and y=1%2F2