I don’t know if I’m 100% correct but I got
Exact form x= 103/5
Decimal form x=20.6
Sonia practices for 96 mins (1 hour 36mins ) 0.8 = 80%
Sense -4 and +2 would be 6 digits away from each other, we would then have to figure out, what would 4 times x - 2 would equal "x".
We would do, 4×2 = 8.
8 - 2 = 6.
Sense 6 is the amount of how much -4 and +2 would be from each other, this would then mean that x would then equal 8.