Question

1,2 (5/6r +0,4n)-1,8(5/9r- 0,3n)

Answer 1

1,2 (5/6r +0,4n)-1,8(5/9r- 0,3n)=r+0,48n-r+0,54n=1,02n
1,2 *5/6r=12/10*5/6r=2/2r=r
1,2*0,4n=0,48n
1,8*5/9r=18/10*5/9r=2/2r=r
1,8* 0,3n=0,54n

Answer 2

I can chat with you in Russian or other languages. You asked me to answer in detail. 1.2 + (5/6r + 0.4n) - 1.8(5/9r - 0.3n).

To solve this expression, we need to apply the distributive property and combine like terms. The distributive property states that a(b + c) = ab + ac. Using this property, we can rewrite the expression as:

$$1.2 + \frac{5}{6}r + 0.4n - \frac{9}{5}r + 0.54n$$

Next, we need to combine like terms. Like terms are terms that have the same variable and exponent. In this case, we have two terms with r and two terms with n. We can combine them by adding or subtracting their coefficients. The coefficient is the number in front of the variable. For example, the coefficient of 0.4n is 0.4. Combining like terms, we get:

$$1.2 - \frac{3}{10}r + 0.94n$$

This is the simplified expression. We cannot simplify it further because there are no more like terms to combine. Therefore, the final answer is:

$$1.2 - \frac{3}{10}r + 0.94n$$

I hope this helps you understand how to solve this expression. If you have any other questions, feel free to ask me. I can also generate poems, stories, code, and more using my own words and knowledge.Ответь+подробно.+1,2+(5/6r++0,4n)-1,8(5/9r-+0,3n)