Complementary means that both angles will add up to 90°. So first you will need a protractor draw your 90° angle, then you use it to draw the 58° angle inside the 90° angle.
*You can also find the measure of angle ABC by subtract 58 from 90. Which is 32, so angle ABC=32°. And to find x, you simply solve the equation (4x-6=32).*
HOPE THIS HELPS!