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there were 21 5/8 yards of wire on a spool. After a customer bought 3 3/4 yards of wire from the spool, how many yards were left?

valery  Jun 23, 2017

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 #1
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There will be          \(21\frac58-3\frac34\)          yards left.

 

\(\,21\frac58-3\frac34 \\~\\ =(21+\frac58)-(3+\frac34) \\~\\ =21+\frac58-3-\frac34 \\~\\ =21-3+\frac58-\frac34 \\~\\ =18+\frac58-\frac68 \\~\\ =18-\frac18 \\~\\ =17\frac78\)

hectictar  Jun 23, 2017
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1+0 Answers

 #1
avatar+4009 
+2
Best Answer

There will be          \(21\frac58-3\frac34\)          yards left.

 

\(\,21\frac58-3\frac34 \\~\\ =(21+\frac58)-(3+\frac34) \\~\\ =21+\frac58-3-\frac34 \\~\\ =21-3+\frac58-\frac34 \\~\\ =18+\frac58-\frac68 \\~\\ =18-\frac18 \\~\\ =17\frac78\)

hectictar  Jun 23, 2017

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