SOLUTION:
the sum of two number in 9.yhe difference between five times of the first and four times of the second is 9.what are that number.
Algebra.Com
Question 747462:
the sum of two number in 9.yhe difference between five times of the first and four times of the second is 9.what are that number.
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
X+Y=9 OR X=9-Y
5X-4Y=9
5(9-Y)-4Y=9
45-5Y-4Y=9
-9Y=9-45
-9Y=-36
Y=-36/-9
Y=4 ANS.
X=9-4
X=5 ANS.
PROOF:
5*5-4*4=9
25-16=9
9=9
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