SOLUTION: A board is 6 1/2 feet long. you cut off a 1 3/4 foot piece and a 2 2/3 foot piece. how much board is left?

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Question 860882: A board is 6 1/2 feet long. you cut off a 1 3/4 foot piece and a 2 2/3 foot piece. how much board is left?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find a common denominator for 2,3, and 4. Use 12.
6+%2B+1%2F2=72%2F12%2B6%2F12=78%2F12
1+%2B+3%2F4=12%2F12%2B9%2F1221%2F12
2+%2B+2%2F3=24%2F12%2B8%2F12=32%2F12
So then,
78%2F12-21%2F12-32%2F12=%2878-21-32%29%2F12
78%2F12-21%2F12-32%2F12=25%2F12
78%2F12-21%2F12-32%2F12=2+%2B1%2F12