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(1 5/18-2 4/27) * 5,4 x = 9 1/2 + 2 1/2

(1 5/18 - 2 4 / 27) х 5,4x = 9 1/2 + 2 1/2

1 5/18 - 2 4/27 = - (2 4/27 - 1 5/18) = - (2 8/54 - 1 15/54) =

- (1 62/54 - 1 15/54) = - 47/54

- 47/54 x 5,4x = - 47/54 x 27/5x = - 47/10x = - 4 7/10x

9 1/2 + 2 1/2 = 11 2/2 = 12

- 4 7/10x = 12

x = 12 : (-4 7/10)

12 : (-4 7/10) = 12 : ( - 47/10) = 12 x (-10/47) = - 120/47 = - 2 26/47

x = - 2 26/47

5,4 = 5 4/10 = 5 2/5=27/5 4 7/10 = 47/10