You can solve <span>9/x-4/y=8 for x or for y but NOT at the same time.
Solving for x: </span><span>9/x-4/y=8 Mult all 3 terms by xy to eliminate the fractions.
9(xy)/x - 4xy/y = 8xy => 9y - 4x = 8xy, or 9y = 4x + 8xy = 4x(1+2y)
then 9y = x [ 4(1+2y) ]
9y
therefore x = ------------
4(1+2y)
Solve for y using a similar approach.
</span>
no you are actually doing really good keep it up
Answer:
x = 4/5
Step-by-step explanation:
1) Group like terms
4x + 7x + 5x - 2 - 10 = x
2) Add similar elements
16x - 2 - 10 = x
3) Subtract
16x - 12 = x
4) Add 12 to both sides
16x - 12 + 12 = x + 12
5) Simplify
16x = x + 12
6) Subtract x from both sides
16x - x = x + 12 - x
7) Simplify
15x = 12
8) Divide both sides by 15
15x/15 = 12/15
9) Simplify
x = 4/5
The answer to question #5 is 17