The carpenter needs
feet of wooden plank to fix the stairs.
<h3>Further Explanation</h3>
<u>Given:</u>
Total wooden of plank is
feet
He then cut
feet for the slat of a deck
feet for repairing a Bannister
and the rest for fixing the stairs
<u>Question:</u>
How many feet of wood does the carpenter use to fix the stair?
The rest to fix the stairs = Total wooden of plank - wooden of plank use for the slat of a deck - wooden of plank use for repairing a Bannister.

the denominator is different, so we need to find a common denominator for 2, 4 and 3 which is 12, so :

we can write the above equation as follow

we can break up 10 into two smaller numbers
So, the wooden plank use for fixing the stairs is
feet.
<h3>Learn More</h3>
Part to whole relationship brainly.com/question/11677654
Mixed fraction (part to whole relationship) brainly.com/question/2954545
Mixed fraction brainly.com/question/745462
Keyword: mixed fraction, subtraction, improper fraction, part to whole relationship, grouping, mixed fraction additional