Q1: X is greater than or equal to 3. Q2: x is greater than -90
Explanation:
QUESTION 1:
You can use simple solving for this until you are left with only x. First take the 6 to the right hand side and then divide both terms by 7.
QUESTION 2:
As with the first one, take the 7 to the right hand side and then multiply both sides by 45