Question

Verify that (x + y)=x+yby taking x=7/11,y =-22/21​

Answer 1

Answer:

−0.411255411255

Step-by-step explanation:

(x+y) = x+y

x=7/11 , y=-22/21

(7/11+(-22/21)) = 7/11+(-22/21)

(7/11-22/21)= 7/11-22/21

−0.411255 = −0.411255

Answer 2

Answer:The equation (x/y) - 1 = (x - 1) / (y - 1) does not hold true when x = 7/11 and y = -22/21.

Step-by-step explanation:

To verify the equation using the given values, let's substitute x = 7/11 and y = -22/21 into both sides of the equation and see if they are equal.

Left side of the equation: (x/y) - 1

Substituting x = 7/11 and y = -22/21:

(7/11) / (-22/21) - 1

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction:

(7/11) * (-21/22) - 1

Simplifying the fraction:

-147/242 - 1

To subtract fractions, we need a common denominator:

(-147/242) - (242/242)

Combining the fractions:

(-147 - 242) / 242

-389/242

Right side of the equation: (x - 1) / (y - 1)

Substituting x = 7/11 and y = -22/21:

(7/11 - 1) / (-22/21 - 1)

Simplifying the fractions:

(-4/11) / (-22/21 - 21/21)

Combining the fractions:

(-4/11) / (-22 - 21) / 21

(-4/11) / (-43/21)

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction:

(-4/11) * (21/-43)

Simplifying the fraction:

84/473

Comparing the results:

-389/242 ≠ 84/473

Therefore, the equation (x/y) - 1 = (x - 1) / (y - 1) does not hold true when x = 7/11 and y = -22/21.