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настя255073
@настя255073
July 2022
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(a+1)/3=(1-a)/4
(1-a)/11=(3-2a)/12
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кляча
Verified answer
№1) (а+1) /3 = (1-а)/4
4(а+1) =3(1 -а)
4а +4 = 3 -3а
4а +3а = -4 +3
7а = - 1
а = -1/7
№2
12(1-а) = 11(3 - 2а)
12 - 12а = 33 -22а
-12а + 22а = 33 -12
10а = 21
а = 2,1
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Answers & Comments
Verified answer
№1) (а+1) /3 = (1-а)/44(а+1) =3(1 -а)
4а +4 = 3 -3а
4а +3а = -4 +3
7а = - 1
а = -1/7
№2
12(1-а) = 11(3 - 2а)
12 - 12а = 33 -22а
-12а + 22а = 33 -12
10а = 21
а = 2,1