23-01-2018
Mathematics

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5/7y=3-1/5 what is y?

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altavistard altavistard

23-01-2018

You want y? One way to get y alone would be to mult. all 3 terms by (7/5):

(7/5)(5/7)y = (7/5)*3 - (7/5)(-1/5). This simplifies to:

y = 21/5 * 7/25, or y = 147 / 125.

You could check this using decimal fractions:

y = 4.20 * 0.28 = 1.176 = 147 / 125.

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