SOLUTION: Please tell me how to solve a problem like: 100x-4000/100x=.3 Solve for x. thank you

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Question 443089: Please tell me how to solve a problem like: 100x-4000/100x=.3 Solve for x. thank you
Answer by swincher4391(1107) About Me  (Show Source):
You can put this solution on YOUR website!
I'd say the first thing you need to do is multiply by 100x.
%28100x-4000%29%2F100x+=+.3
100x-4000+=+30x
-4000+=+-70x
x+=+4000%2F70+=+400%2F7
Your answer is 400%2F7 or 57.1 if you need it in decimal form.