How much% d% a is it equal to [2.5:3] + [3.4:1] + [3.5:2] + [+ 2.4:3] + [- 1.2:1] + [+ 1.3:1]

[2.5 3] + [3.4 1] + [3.5 2] + [+ 2.4 3] + [- 1.2] + [+ 1.3 1 = (2.3 / 5 + 3.2 / 5) + (3.1 / 4 + 2.3 / 4) + (1.1 / 3-1 / 2) = 6 + 6-1 / 6 = 11.5 / 6

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