Trevor M. answered • 11/05/19
Tutor
New to Wyzant
I’m a 17 year old high school student who tutors chess and math
Hello! I believe the answer to this problem is 10 and 3. 10-3=7. 10+3=13. As for a systematic way to solve the problem, we can use systems of equations.
a+b=13
a-b=7
add the two equations together gives
2a=20
a=10
plug in a for one of your equations
10+b=13
b=3
I hope that helps!
Isaiah N.
I have another question, what 2 numbers equal to 15 but have a difference of 5?
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11/05/19
Trevor M.
This would be 10 and 5. You can solve in a similar way with the system of equations. a+b=15 a-b=5 If you’ve learned systems of equations, then you should be able to solve many problems in this way. If you haven’t, I recommend learning them through tutoring or through online videos. They really are a great tool.
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11/05/19
Isaiah N.
thank you11/05/19