Question

Найди значение выражения 7m−11n, если m=−6/11, n=6/13. 7m−11n =

Answer 1

$7*(-\frac{6}{11})-11*\frac{6}{13}=-\frac{42}{11}-\frac{66}{13}=-(\frac{546+726}{143})=-\frac{1272}{143}=-8\frac{128}{143}$

Answer 2

To find the value of the expression 7m - 11n, we'll substitute the given values of m and n into the expression and then perform the calculations.

Given: m = -6/11 n = 6/13

Now, let's calculate the value of 7m - 11n:

7m - 11n = 7 * (-6/11) - 11 * (6/13)

Now, simplify the expression:

7m - 11n = -42/11 - 66/13

To combine the fractions, we need a common denominator, which is 11 * 13 = 143:

7m - 11n = (-42 * 13)/(11 * 13) - (66 * 11)/(13 * 11)

7m - 11n = -546/143 - 726/143

Now, combine the fractions:

7m - 11n = (-546 - 726)/143

Finally, calculate the numerator:

7m - 11n = -1272/143

Now, let's simplify the fraction:

7m - 11n = -8.896

So, the value of the expression 7m - 11n, when m = -6/11 and n = 6/13, is approximately -8.896.