Răspuns :
2x + 28 grade 24'10" = 180 grade
2x = 180 grade - 28 grade 24'10" = 151 grade 35'50"
x = 151 grade 35'50" : 2
x = 75 grade 47'55"
2x + 28 grade 24'10" = 180 grade
2x = 180 grade - 28 grade 24'10" = 151 grade 35'50"
x = 151 grade 35'50" : 2
x = 75 grade 47'55"