solve for x. 12-(x/4)=(x/5) can someone help me how to do it

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01-12-2017
Mathematics

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solve for x. 12-(x/4)=(x/5) can someone help me how to do it

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altavistard altavistard · Answer 1 · 2017-12-01T18:00:02+01:00

altavistard altavistard

01-12-2017

I'd suggest starting by finding and using the LCD to eliminate the fractions 1/4 and 1/5. The LCD here is 20.

Mult. all 3 terms by 20, we get 240 - 5x = 4x. The 240 = 9x, and x = 26 2/3.

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suspho suspho · Answer 2 · 2017-12-01T19:08:26+01:00

suspho suspho

01-12-2017

12 - x/4 = x/5
12 = x/4 + x/5
12 = (5x + 4x)/20
12 = (9x)/20
x = 12 * 20/9
x = 240/9
x = 80/3

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