Answer:
a ≤ 17
Step-by-step explanation:
25 ≥ 2a -9
To solve the equation above, we are going to follow the step below;
First, we will add 9 to both-side of the inequality
25 ≥ 2a -9
25 +9 ≥ 2a -9 + 9
34 ≥ 2a
To get the value of a, we will divide both-side of the inequality by 2
34/2 ≥ 2a/2
(On the right-hand side of the inequality, the 2 at the numerator will cancel-out the 2 at the denominator while on the left-hand side of the equation 34 will be divided by 2)
34/2 ≥ a
17 ≥ a
which implies: a ≤ 17