9/20 :0,09+3,61:1/5-18,63=? (2 1/2-1,805):1,39+4:2,5=?

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вопрос Следующий
вопрос

To solve this problem, we need to follow the order of operations (parentheses, exponents, multiplication and division from left to right, addition and subtraction from left to right).

Now, let's put it all together:

3.70 - 18.00 = -14.30
-14.30 / 0.5 = -28.60
-28.60 + 1.6 = -27

Therefore, the final solution is -27.