Т1 = (S : 100 )×40
T2 = (T1 :100)×80
T3 =14 га
S = Т1 + Т2 + Т3
S = 5T1 /2.
T1 +T2 +T3 = 5T1/2
T1 + 4T1/5 +14 = 5T1/2
T1 +4T1/5 - 5T1/2 = -14
(10T1 + 8T1 - 25T1) / 10 = -14
-7T1 / 10 = -14
-7T1 = -14×10
T1 = 20 га. Т2 = (20:100)×80= 16 га ответ 16 га
Т1 = (S : 100 )×40
T2 = (T1 :100)×80
T3 =14 га
S = Т1 + Т2 + Т3
S = 5T1 /2.
T1 +T2 +T3 = 5T1/2
T1 + 4T1/5 +14 = 5T1/2
T1 +4T1/5 - 5T1/2 = -14
(10T1 + 8T1 - 25T1) / 10 = -14
-7T1 / 10 = -14
-7T1 = -14×10
T1 = 20 га. Т2 = (20:100)×80= 16 га ответ 16 га