10,2:(18,5-(5 2/3*1,75-3 2/3*1,75):2 1/3) _________________________________ 80,64:1,6-3,4 : 1/6 По действиям

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10, 2: (18, 5 - (5 2/3 1.75 - 3 2/3 1.75) : 2 1/3)

Firstly, solve the expressions inside the parentheses:

5 2/3 1.75 = 17/3 7/4 = 119/12

3 2/3 1.75 = 11/3 7/4 = 77/12

Now subtract these two values: 119/12 - 77/12 = 42/12 = 3.5

Now substitute this value back into the original expression:

10, 2: (18, 5 - 3.5 : 2 1/3)

Next, simplify the division:

3.5 : 2 1/3 = 3.5 : 7/3 = 3.5 * 3/7 = 10.5/7 = 1.5

Now substitute this value back into the original expression:

10, 2: (18, 5 - 1.5)

Now subtract the values inside the parentheses:

18, 5 - 1.5 = 17.5

Finally, substitute this value back into the original expression:

10, 2: 17.5

Now perform the division:

10, 2 / 17.5 = 80.64 : 1.6 - 3.4 : 1/6

Firstly, divide 80.64 by 1.6:

80.64 / 1.6 = 50.4

Now substitute this value back into the expression:

50.4 - 3.4 : 1/6

Now divide 3.4 by 1/6:

3.4 / (1/6) = 3.4 * 6 = 20.4

Now substitute this value back into the expression:

50.4 - 20.4

Finally, subtract the values:

50.4 - 20.4 = 30

Therefore, the final answer is 30.