Răspuns :
a / 0,(3) = b / 1 , 5 = c / 1 , 25 = K
a = 0,(3) × K = 3 / 9 × K = K / 3
b = 1 , 5 × K = 15 / 10 × K = 3K / 2
c = 1 , 25 K = 125 / 100 × K = 5K / 4
7a - b + 3c = 110
7 × K / 3 - 3K / 2 + 15 / 4 = 12 / 110
28K - 18K + 45K = 1320
55K = 1320
K = 1320 / 55 ( 5 = 264 / 11
a = 88 / 11
a = 8
b = 3 / 11
b = 396 / 11 => b = 36
c = 5 × 11 =
c = 30
a = 0,(3) × K = 3 / 9 × K = K / 3
b = 1 , 5 × K = 15 / 10 × K = 3K / 2
c = 1 , 25 K = 125 / 100 × K = 5K / 4
7a - b + 3c = 110
7 × K / 3 - 3K / 2 + 15 / 4 = 12 / 110
28K - 18K + 45K = 1320
55K = 1320
K = 1320 / 55 ( 5 = 264 / 11
a = 88 / 11
a = 8
b = 3 / 11
b = 396 / 11 => b = 36
c = 5 × 11 =
c = 30