Question

if 23x - 21y = 55 and 21x- 23y = 33 then find (x- y) = ?​

Answer 1

Answer:

Step-by-step explanation:

23x - 21y = 55 ------------------(1)

and 21x- 23y = 33---------------(2)

Subtracting (2) from(1)

2x+2y=22

x+y=11, y=11-x-----------------(3)

From(1)

23x-21(11-x)=55

23x-231+21x=55

44x=286

x=286/44=6.5

From(3)

6.5+y=11

y=4.5

thus x-y=6.5-4.5=2

Answer 2

The Answer

(x-y) = 1.0869565217