" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
11x + 13 = 90
11x = 90 - 13
11x = 77
x = 7
penyiku sudut AOC = sudut COB
sudut COB = 5x + 9 = 35 + 9 = 44 (b)