Question

1/9(2,7m-2 1/4n)-4,2(5/7m-0,5n)​

Answer 1

Ответ:

1/9*(27/10m-9/4n)-21/5*(5/7m-1/2n)
1/45*(5(27/10m-9/4n)-189(5/7m-1/2n))
1/45*(27/2m-45/4n-135m+189/2n)
1/45*(-243/2m+333/4n)
1/45*(-9/4*(54m-37n))
-1/5*1/4*(54m-34n)
Ответ:-1/20*(54m-34n)

Пошаговое объяснение:

Это все решение!

Answer 2

I can help you with your math problem. The answer is:

$$\frac{1}{9}(2.7m-2+\frac{1}{4}n)-4.2(\frac{5}{7}m-0.5n) = -\frac{11}{9}m + \frac{1}{36}n + \frac{2}{9}$$

To solve this, you need to apply the distributive property of multiplication over addition and subtraction. That means you multiply each term inside the parentheses by the factor outside the parentheses. For example:

$$\frac{1}{9}(2.7m-2+\frac{1}{4}n) = \frac{1}{9} \times 2.7m - \frac{1}{9} \times 2 + \frac{1}{9} \times \frac{1}{4}n$$

Then you simplify the terms by multiplying the fractions and combining the like terms. Like terms are terms that have the same variable and exponent. For example:

$$\frac{1}{9} \times 2.7m - \frac{1}{9} \times 2 + \frac{1}{9} \times \frac{1}{4}n = \frac{3}{10}m - \frac{2}{9} + \frac{1}{36}n$$

You do the same for the other parentheses and then subtract the two expressions. You get the final answer by simplifying the result. I hope this helps you understand the solution.Ответь+подробно.++1/9(2,7m-2+1/4n)-4,2(5/7m-0,5n)​+