Помогите решить -1 1/3 + 5 2/3 + (2/3)+ 4 + (-2 1/3)

Question

Помогите решить
-1 1/3 + 5 2/3 + (2/3)+ 4 + (-2 1/3)

Answer 1

-1 1/3 + 5 2/3 + (2/3)+ 4 + (-2 1/3) = -1 1/3 + 5 2/3 + 4 2/3 + (-2 1/3) = -3 2/3 +  5 2/3 + 4 2/3 = (-3+5+4) 2/3 = 6 2/3

Comments

а откуцда 3 2\3

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откуда

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-1 1/3 + (-2 1/3) = -3 2/3

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спасибо