If 5x=-20 then it would be

adding 2 and subtracting 2 they cancel out so its

and if you subtract 2 from negative 18 it is negative 20 so it is true
in 15 hours Alexandra makes 7.5 boxes. how many boxes can she make in one hour?
so 15 hours=7.5 boxes
divide both sides by 15 to get hours
1 hour=7.5/15
answer is 1 hour=0.5 boxes
hope this helped you :)
The answer is 16/21 because it is equivalent to 32/42
Answer:
B
Step-by-step explanation:
328= 82 x 4
348/4 = 87
87 - 82 = 5
Answer:
The first blank is $640.30
The second blank is 670
Step-by-step explanation: