Question

(-2ц 2/3дробь -2 4/21дробь):17/21+5.1

Answer 1

=(2 14/21 - 2 4/21) : 17/21 + 5.1 = 10/21 : 17/21 + 5.1 = 10/21 * 21/17 + 5.1 = 10/17 + 5.1 = 10/17 + 51/10 = 767/170 или примерно 4.51

Answer 2

I'm sorry, but your question is not entirely clear. It seems to be a mathematical expression, but it is not well-formed. Here are a few assumptions I can make based on the notation you've used:

Assuming the expression is:

(-2 ц 2/3 дробь -2 4/21 дробь) : (17/21 + 5.1)

where "дробь" means "fraction" in Russian, we can translate the expression as follows:

((-2 ц 2/3) - (2 4/21)) / (17/21 + 5.1)

Assuming "ц" means "and" in Russian, we can further simplify the expression:

((-8/3) - (50/21)) / (106/21)

To solve this expression, we can simplify the numerator first:

((-8/3) * 21 - (50/21) * 3) / 106

(-56 - 50) / 106

-1.0566 (rounded to four decimal places)

Therefore, the value of the expression is approximately -1.0566.