SOLUTION: The sum of two digits of a certain number is 15. If from three times the tens digit there is subtracted four times the units digit, the result is 4. Find the number.

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Question 1054975: The sum of two digits of a certain number is 15. If from three times the tens digit there is subtracted four times the units digit, the result is 4. Find the number.
Answer by josgarithmetic(39631) About Me  (Show Source):
You can put this solution on YOUR website!
t for tens digit
u for ones digit

system%28t%2Bu=15%2C3t-4u=4%29

Begin with Elimination method and use system system%284t%2B4u=60%2C3t-4u=4%29.