Determine whether each statement is true or false.
statement
true
false
the expressions b÷4 and 14b are equivalent.
the expressions 5z−z and 3z are equivalent.
the expressions a+b+c and 3a are equivalent.
the expressions 3m+3m and 6m are equivalent.

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.