You have two angles, let's call them ∠1 and ∠2 of unknown measure, one of them measures 24.6º more than the other and both angles are complementary.
Let "xº" be the measure of ∠1, then ∠2 will beasure (x+24.6)º
∠1 and ∠2 are complementar, this means that together they add up to 90º

Replace the expression with the angles measures

And solve for x

The angles measure:
∠1=32.7º
∠2=32.7+24.6=57.3º