SOLUTION: 24. Divide 2x-6 divide 5x-15 ---- ----- 21 12 I think I factor. I did 2(x-3) divide 5(x-3) ------ ----- 21 12 Now wh

Algebra ->  Exponents-negative-and-fractional -> SOLUTION: 24. Divide 2x-6 divide 5x-15 ---- ----- 21 12 I think I factor. I did 2(x-3) divide 5(x-3) ------ ----- 21 12 Now wh      Log On


   

Question 62690This question is from textbook Beginning Algebra
: 24. Divide
2x-6 divide 5x-15
---- -----
21 12

I think I factor. I did
2(x-3) divide 5(x-3)
------ -----
21 12
Now what do I do? This question is from textbook Beginning Algebra

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
24. Divide
Assume your problems is:
:
%282x-6%29%2F21 / %285x-15%29%2F12
:
Remember when you divide by a fraction you invert the dividing fraction & mult:
:
%282x-6%29%2F21 * 12%2F%285x-15%29
:
You can divide 3 into 21 and into 12 and factor out the 2 and 5:
:
%282%28x-3%29%29%2F7 * 4%2F%285%28x-3%29%29 =
:
Cancel the (x-3)'s:
:
2%2F7 * 4%2F5 = 8%2F35 is the solution
?