Respuesta :

xxninoxx
complementary means 90 degrees so your gonna do
3x+3+10x-4=90
Combine like terms so you get
13x-1=90
Add the one
13x=91
Divide you get x=7
Now u just plug the 7 into both
So 3(7)+3=24°
10(7)-4=66°
And you found all measurements :)