Respuesta :
The second and 3dr
The third is the same as the second.But in the 3rd the x is multipied by 5/7 so when you multiplies by 7/5 you have the x isolated.Then you do the same thing on the other side,and multiply 19.60 by 7/5
so x=19.60 multiplied by 7 and then divided by 5
x=27.44 (amount spent on the store)