Posted by Karin on Saturday, April 10, 2010 at 11:55pm.
2^2x1 = 32^x2
2/x  1/2x= 1/2
(2 over x minus 1 over 2x equals 1 over 2)
3/x + 8/x5= 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
Crossmultiply.
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 2x1 and x2, rewrite the right side as a power of 2.
2^(2x1) = (2^5)^(x2) = 2^(5x10)
The exponents of 2 must be equal.
2x  1 = 5x  10
3x = 9
x = 3

math  mary, Tuesday, February 7, 2017 at 4:29pm
x over 4 is equal to negitive 1
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