Answer:
x=13.6
Step-by-step explanation:
First, let's distribute.
7x-21=4x+20
Second, let's subtract 4x from both sides.
3x-21=20
Next, let's add 21 to both sides.
3x=41
Lastly, let's divide 3 from both sides.
x=13.66666667
x=13.6
Answer:
The delivery person can bring up max 16 boxes at one time.
Step-by-step explanation:
The elevator can only hold max 850 lbs, and the delivery man weighs 180 lbs.
850-180=670
That means the delivery man can have up to 670 lbs of boxes on the elevator.
670/40=16.75
Which means that the delivery man can hold up to 16 boxes max at one time.
Answer:
x+-(1)/(2),-3
Step-by-step explanation:
Thank you:)