Answer:
The width of the rectangle is 6 units
Step-by-step explanation:
x = 19
3x - 3 = [6 (x - 10)]
3x - 3 = 6x - 60
3x - 6x = - 60 + 3
- 3x = - 57
- x = - 57/3
- x = - 19
A= -5
-3-2=-5
-hhhhhhhhhhhhhhhhhhhhhh
5 x 10 = 50
five boxes
10 books in each
5+5+5+5+5+5+5+5+5+5=50
multiplying is the faster way