55-с=52c = 55 - 52c = 3
Х-30=7X = 7 + 30X = 37
У+9=16У = 16 - 9У = 7
48-у=40y = 48 - 40y = 8
d+10=60d = 60 - 10d = 50
d+20=80d = 80 - 20d = 60
55-с=52
c = 55 - 52
c = 3
Х-30=7
X = 7 + 30
X = 37
У+9=16
У = 16 - 9
У = 7
48-у=40
y = 48 - 40
y = 8
d+10=60
d = 60 - 10
d = 50
d+20=80
d = 80 - 20
d = 60