SOLUTION: the breath of a rectangle is 3 less than the length.if both length and breath are reduced by 3 units, the area of the rectangle reduces by 176sq.units. find the dimensions of the o

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: the breath of a rectangle is 3 less than the length.if both length and breath are reduced by 3 units, the area of the rectangle reduces by 176sq.units. find the dimensions of the o      Log On


   

Question 1043075: the breath of a rectangle is 3 less than the length.if both length and breath are reduced by 3 units, the area of the rectangle reduces by 176sq.units. find the dimensions of the original rectangle.
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
system%28y=x-3%2Cxy=A%2C%28x-3%29%28y-3%29=A-176%29

system%28x%28x-3%29=A%2Cxy-3x-3y%2B9=A-176%29

Notice again that xy=A.
-
-xy%2B3x%2B3y-9=176-A
3x%2B3y-9=176
3x%2B3y=185
3x%2B3%28x-3%29=185
6x-9=185
6x=194
3x=97
highlight%28x=97%2F3%29
and
highlight%28y=97%2F3-3%29
-
-
You still want to simplify those results.