Răspuns :
x - 416 : 4 + 25 = 1980
x - 104 + 25 = 1980
x - 104 = 1980 - 25
x - 104 = 1955
x = 1955 + 104
x = 2059
x - 104 + 25 = 1980
x - 104 = 1980 - 25
x - 104 = 1955
x = 1955 + 104
x = 2059