SOLUTION: how do you verify that your solution is correct for this equation? x+y=20 x-y=4

Question 775830: how do you verify that your solution is correct for this equation?
x+y=20
x-y=4
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

.......eq.1
.....eq.2
______________________ first find solutions that make both equations true
.......eq.1
.....eq.2
______________________...add eq.1 and eq.2

now find
.......eq.1...plug in

to verify that your solution is correct, go back to original equations and plug in values for and
.......eq.1

.....eq.2

........since the left side of the equation is same as the right side in both eq.1 and eq.2 means your solution is correct

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