Posted by **Karin** on Saturday, April 10, 2010 at 11:55pm.

2^2x-1 = 32^x-2

2/x - 1/2x= 1/2

(2 over x minus 1 over 2x equals 1 over 2)

3/x + 8/x-5= 1

(3 over x plus 8 over x minus 5 equals 1)

- math problem -
**drwls**, Sunday, April 11, 2010 at 1:16am
2/x - 1/2x = 1/2

Make a common denominator on the left.

3/2x = 1/2

Cross-multiply.

2x = 6

Divide both sides by 2.

x = 3

Now you try one.

I am not sure what the exponents are in your first problem. If they are 2x-1 and x-2, rewrite the right side as a power of 2.

2^(2x-1) = (2^5)^(x-2) = 2^(5x-10)

The exponents of 2 must be equal.

2x - 1 = 5x - 10

3x = 9

x = 3

## Answer This Question

## Related Questions

- math - I am a mom and I can't remember how to do this... 3 and 2 over 9 minus 1 ...
- algebra - I worked the problem out, but could you check my work over and see if ...
- math - Simplify 1 over 2 of 1 over 4 devide 1 over 3 all over 1 over 6 minus 3 ...
- math - im supposed to perform the indicated operation and simplify if possible ...
- math - Write an explicit formula for the sequence one-half, three-sevenths, one-...
- Quick calc question - Write the Riemann sum to find the area under the graph of ...
- Math Help! - Solve each problem. 1. two-thirds equals twelve over x x = 18 x = ...
- REDWOOD ELEM - 1 OVER T MINUS 2 EQUALS T OVER 8 PLEASE HELP ME SOLVE
- algebra - x over y minus y over x divided by 1 over y plus 1 over x.
- math - 1 hole number 1 over 8 minus 3 over 4 plus 1 over 2

More Related Questions