Answer:
x>-5
Step-by-step explanation:
x-7>-12
Add 7 to each side
x-7+7>-12+7
x> -5
x-7> -12
x> -5 combine like terms.
Yes
Since we are adding two polynomials
The sum will also be polynomial
x = 19/3
30 - 11 = 3x
3x = 19
hope it helps!