Question

if 7 upon 5 x minus 9 equals to 5 upon 7 x + 1 then 12 x =?​

Answer 1

Step-by-step explanation:

7/5x-9=5/7x+1

by cross multiplication

7(7x+1)=5(5x-9)

49x+7=25x-45

49x-25x= -45-7

24x= -52

x= -52/24=13/6

therefore,12x=12×13/6=2×13=26

HOPE THIS HELPS YOU.......

Answer 2

7/5x-9=5/7x+1

7(7x+1)=5(5x-9)

49x+7=25x-45

49x-25x= -45-7

24x= -52

X= -52/24

X= -13/6

12x= 12(-13/6)

= 2(-13)

= -26