SOLUTION: I needed help with simplifying fractions with a single variable? Any problem but I've been on youtube and Khan Academy trying to figure it out but it won't click.
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Question 944264: I needed help with simplifying fractions with a single variable? Any problem but I've been on youtube and Khan Academy trying to figure it out but it won't click. Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! Here's a simple one:
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5/7 = 8/x
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find x:
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5/7 = 8/x
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multiply both sides by x:
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x(5/7) = x(8/x)
5x/7 = 8x/x
5x/7 = 8*(x/x)
5x/7 = 8*1
5x/7 = 8
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multiply both sides by 7:
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7(5x/7) = 7*8
5x*(7/7) = 7*8
5x*1 = 7*8
5x = 7*8
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divide both sides by 5:
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(5x)/5 = (7*8)/5
(5/5)x = (7*8)/5
1*x = (7*8)/5
x = (7*8)/5
(7*8)/5
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copy and paste the above expression in to this calculator:
http://sooeet.com/math/scientific-calculator.php
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x = 11.2
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do a few more like this, to understand the basic rules of algebraic manipulation:
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