SOLUTION: When 5 is added to a certain number, and also taken from that number, the product of the result is 75, Find the number.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: When 5 is added to a certain number, and also taken from that number, the product of the result is 75, Find the number.       Log On


   

Question 1078944: When 5 is added to a certain number, and also taken from that number, the product of the result is 75, Find the number.
Found 2 solutions by Alan3354, josgarithmetic:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Makes no sense.

Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
x, "a certain number"

x+5, "five is added to the number"
x-5, "five is taken from the certain number"

"... product is 75."
%28x%2B5%29%28x-5%29=75

x%5E2-25=75
x%5E2=100
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system%28x=-10%2Cor%2Cx=10%29