SOLUTION: Please help me solve this problem using substitution? Find the value of two numbers if their sum is 12 and their difference is 4.
x+y=12
x-y=4
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Question 536674: Please help me solve this problem using substitution? Find the value of two numbers if their sum is 12 and their difference is 4.
x+y=12
x-y=4
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
(1)
(2)
---------------
(2)
Substitute this value of
into equation (1)
(1)
(1)
(1)
(1)
Substitute this back into either (1) or (2)
(2)
(2)
The solution is (8,4)
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