SOLUTION: The sum of two numbers is 115. The difference is 21. Find the numbers.(I've been having a hard time getting myself to learn most of this chapter and the test is soon, so I really n
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Question 73687This question is from textbook Algebra 1
: The sum of two numbers is 115. The difference is 21. Find the numbers.(I've been having a hard time getting myself to learn most of this chapter and the test is soon, so I really need this help! Thanks!)
This question is from textbook Algebra 1
Answer by checkley75(3666) (Show Source): You can put this solution on YOUR website!
x+y=115
x-y=21 x=y+21 now substitute (y+21) for xin the first equation.
(y+21)+y=115
y+y=115-21
2y=94
y=94/2
y=47 answer. no solve for x
x-47=21
x=47+21
x=68 answer.
proof
47+68=115
115=115
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