Answer: A (10)
Step-by-step explanation:
Always remember that unit labels cancel like number do and conversion problems will be simple....
64oz(lb/16oz)=4 lb
No enough info
you can just say that five brought there own lunch while 19 didnt
7a + 10 = 2a subtract 2a from both sides
-2a -2a
5a + 10 = 0 subtract 10 from both sides
-10 -10
5a = -10 then divide both sides by 5
/5 /5
a = - 2
