Answer:
#3: 84 books
#4: 90 pounds
Step-by-step explanation:
#3: 14*6= 84
#4: 30*3= 90
Hope this helps!!
r=7
5r-7=2r+14
add sevento both sides
5r=2r+21
Subtract 2r from both sides.
3r=21
divide both sides by 3
<em>56</em>
its 300
ik its is bc i got it right
