SOLUTION: -3/2x+5=2/x-1 the 2x+5 goes under the -3 and the x-1 goes under the 2--(I just wanted to be very clear of what the problem looked like so that I could be sure I communicated how it

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: -3/2x+5=2/x-1 the 2x+5 goes under the -3 and the x-1 goes under the 2--(I just wanted to be very clear of what the problem looked like so that I could be sure I communicated how it      Log On


   

Question 400104: -3/2x+5=2/x-1 the 2x+5 goes under the -3 and the x-1 goes under the 2--(I just wanted to be very clear of what the problem looked like so that I could be sure I communicated how it looked on my math book page correctly.
this problem according to the book equals -1 but I got -13/7 and when tried another way I got -7
Here is what I did for -3/2x+5=2/x-1:
for the -13/7
-3x+3=4x+10 and subtracted a -4x from both sides so
-7x+3=10 and subtracted three from both sides so
-7x/-7 = - 13/7 (negative 13 over 7)
Here is what I did for the -7
-3x+3=4x+10 and subtracted 3x from both sides so
3=x+10 and then a -10 subtracted from the three gave me
-7=x
I checked to be sure I copied the problem correctly, double checked.



Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

-3%2F%282x%2B5%29+=+2%2F%28x-1%29

 -3x + 3 = 4x + 10   |Yes!  cross multiplying

  -7x = 7         |subtracting 4x and 3 from both sides 

    x = -1