Psychguy98
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- Dec 17, 2010
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If 1/5 + 1/2 + 1/x = 7, then x =
I Know i need a common denominator which is 10.
I Know i need a common denominator which is 10.
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find x
- Thread starter Psychguy98
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D
Deleted member 4993
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Psychguy98 said:If 1/5 + 1/2 + 1/x = 7, then x =
I Know i need a common denominator which is 10.
First "isolate x" - that is keep terms with 'x' in it on one side and rest on the other side.
Psychguy98
Junior Member
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would that be 10x on both sides?
D
Deleted member 4993
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Psychguy98 said:would that be 10x on both sides? ..... and do what?
Psychguy98
Junior Member
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- 147
multiply the numerator by 10x
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Deleted member 4993
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Psychguy98 said:multiply the numerator by 10x
Okay - continue.....
Psychguy98
Junior Member
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- Dec 17, 2010
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- 147
Then i can divide to get. 2x + 5x + 10 = 70x
7x + 10 = 70x
- 7x - 7x
10 = 63x divide
x = 10/63
7x + 10 = 70x
- 7x - 7x
10 = 63x divide
x = 10/63