1) angulo mayor = 90 -24 = 66º
2) x + 4x = 180 5x = 180 x = 36º el angulo menor
3) 2 ( 90-x ) + 3 ( 180-x ) = 320
180 - 2x +540 -3x = 320
5x = 180+540 -320 = 400
x = 400/5 = 80º
4) ( 90-x) = 2/5 ( 180 -x)
90 -x = 360/5 -2x/5
450 -5x = 360 -2x
3x = 450-360 = 90
x = 90/3 = 30º