Question

(y-4y):(3/4x-2 3/4x) если у= -1/3 х=1/2

Answer 1

упрощаем:

-3y : -2x

подставляем

получается: (-3*(-1/3)): (-2*1/2) =1 : -1 = -1

Answer 2

To find the value of the expression $\frac{y-4y}{\frac{3}{4}x - \frac{2}{4}x}$ when $y = -\frac{1}{3}$ and $x = \frac{1}{2}$, we substitute the given values into the expression:

Step 1: Substitute the values of $y$ and $x$ into the expression. $\frac{y-4y}{\frac{3}{4}x - \frac{2}{4}x} = \frac{-\frac{1}{3}-4(-\frac{1}{3})}{\frac{3}{4}(\frac{1}{2}) - \frac{2}{4}(\frac{1}{2})}$

Step 2: Perform the calculations within the parentheses. $\frac{-\frac{1}{3} + \frac{4}{3}}{\frac{3}{4} \cdot \frac{1}{2} - \frac{2}{4} \cdot \frac{1}{2}} = \frac{\frac{3}{3}}{\frac{3}{8} - \frac{1}{4}}$

Step 3: Continue with the calculations. $\frac{1}{\frac{3}{8} - \frac{2}{8}} = \frac{1}{\frac{1}{8}}$

Step 4: Invert the fraction and multiply. $1 \times \frac{8}{1} = 8$

Therefore, when $y = -\frac{1}{3}$ and $x = \frac{1}{2}$, the value of the expression $\frac{y-4y}{\frac{3}{4}x - \frac{2}{4}x}$ is $8$.