<span>18z-7(-3+2z)
= 18z + 21 - 14z
= 4z + 21
answer is False
</span><span>coefficient of z is 4, not 13</span>
Step-by-step explanation:

Answer:
5
Step-by-step explanation:
( divide numerator and denominator by 5 ) , then
=
( with missing number ? = 5 )
Answer: 3.5 pounds
Step-by-step explanation:
17+12.5=29.5
33-29.5=3.5