Minki thinks of a number. He subtracts 1 from the number, divides the result
by 2, and then adds 4. The number he ends up with is 18. What number did
Minki start with?
If you work backward to solve this problem, what do you do first?
O
A. Add 4 to 18
O
B. Multiply 18 by 2
O
C. Subtract 4 from 18
O
D. Add 1 to 18
SUSNYA