Answer:
1. 5x - 3 = 12
2. x/4 = x - 6
3. x < 27
4. x ≥ 10
Explanation:
I'll use x for the number in all problems.
1. The product of 5 and a number decreased by 3 is 12
5x - 3 = 12
2. The quotient of a number and 4 is 6 less than the number
x/4 = x - 6
3. A number is less than 27
x < 27
4. A minimum number of 10
x ≥ 10