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 first simplify the equation by adding the numbers together. This gives us:
7 + a > 11
Next, we can subtract 7 from both sides of the equation to isolate the variable a:
a > 11 - 7
Simplifying further, we have:
a > 4
Therefore, in the solution set, the variable a must be greater than 4.