Find the value of the two numbers if their sum is 76 and their difference is 18, mathematics homework help

Mathematics
Tutor: None Selected Time limit: 1 Day

Jan 13th, 2016

Thank you for the opportunity to help you with your question!

x+y=76

x-y=18

using the second expression we can make x the subject: x=18+y

substituting the value of x to the first expression we have:

18+y+y = 76

18 +2y = 76

2y =76 -18

2y = 58

thus y =58/2 =29

then x =18 +y

thus x= 18 +29 = 47

thus the two numbers are 47 and 29

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jan 13th, 2016

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