SOLUTION: Translate to a system of equations and solve. The sum of two numbers is 8. Their difference is 12. Find the number. So far I have: x+y= 30 x-y= 12 I don't kn

Question 651531: Translate to a system of equations and solve.
The sum of two numbers is 8. Their difference is 12. Find the number.
So far I have: x+y= 30
x-y= 12
I don't know what I have to do to solve for the numbers.
Found 2 solutions by rfer, MathLover1:
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
x+y=8 y=-x+8
x-y=12
x-(-x+8)=12
2x-8=12
2x=12+8
x=20/2
x=10
--------------
10-y=12
-y=12-10
-y=2
y=-2
--------------
10-2=8
I don't know where you got the 30 from.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

....1
....2
__________________
you can solve this system by addition; add 1 and 2
....1
+
....2
_____________________

now find
....1

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