He could type 3 3/7 in one hour.I think this because since it is 1/3 you would have to multiply it by 3.So you multiply 1/3 by 3,It would give one hour.When you multiply 1 1/7 by 3 it would give you 3 3/7.
Answer: 3 cofficients are there ( 5, 2, and 6).
Answer:
=-3x+4
Step-by-step explanation:
expand the brackets
=-7x+4+4x
then collect the like terms
=-3x+4
thats it