The numbers are x and
y.
We'll write the first fraction x/y =
3/4.
x = 3y/4
We'll write
mathematically the second condition from
enunciation:
(x-8)/(y+8) =
1/6
y + 8 = 6(x-8)
We'll
remove the brackets:
y + 8 = 6x -
48
But x = 3y/4
y + 8 = 6*3y/4
- 48
y + 8 = 9y/2 - 48
We'll
multiply by 2 all over:
2y + 16 = 9y -
96
We'll move the terms in y to the left
side:
2y - 9y = -96 - 16
-7y =
-112
We'll divide by -7:
y =
16
We'll come back into the expression of
x:
x = 3*16/4
x =
3*4
x = 12
The
numbers are: x = 12 and y = 16.
No comments:
Post a Comment