19n-57=76
You must get "n" by itself
19n-57+57=76+57 (add 57 to each side)
19n=133
Divide 133 by 19
133÷19=7
n=7
2-2x=5
When something says twice a number it’s always going to be multiplied by 2 and “a number will always be a variable
Answer: Joe began with 36 books.
Step-by-step explanation:
x/2+18=36. 36+18=x. x/2-18=36.