Using mental math, solve the inequality 7 + a > 5 + 6. In the solution set, the variable a must be greater than what number!
To solve the inequality 7 + a > 5 + 6, we can simplify it by adding the numbers on each side:
7 + a > 5 + 6
7 + a > 11
Now we can subtract 7 from both sides to isolate the variable a:
a > 4
Therefore, the solution set for the inequality a > 4 means that the variable a must be greater than 4.