Question

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

Answer 1

(у-4у):(3/4Х-2 3/4х)=3у/2х

у-4у=-3у

(3/4Х-2 3/4х)=-2х

если х=1/2 у= - 1/3

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

Answer 2

To find the value of the expression (у-4у) / (3/4Х - 2 3/4х) when x = 1/2 and у = -1/3, you simply need to substitute these values into the expression and perform the arithmetic. Let's do the calculations step by step:

Step 1: Substitute the given values for x and у into the expression: у - 4у = -1/3 - 4(-1/3) = -1/3 + 4/3 = 3/3 = 1

Step 2: Substitute the value of x into the expression: 3/4Х - 2 3/4х = 3/4 * (1/2) - 2 * (3/4 * 1/2) = 3/8 - 2 * 3/8 = 3/8 - 3/4 = 0

Step 3: Now, calculate the final result by dividing the result from Step 1 by the result from Step 2: (у - 4у) / (3/4Х - 2 3/4х) = 1 / 0

Since you cannot divide by zero, the expression is undefined when x = 1/2 and у = -1/3.