There is no y in this question, however we can solve for t.
1.4t - 0.4(t - 3.1) = 5.8
1.4t - 0.4t + 1.24 = 5.8
t + 1.24 = 5.8
t = 4.56
Here are a bunch of CORRECT answers. Your answer is in the first pic. I got number 3 wrong, but it still showed the correct answer.
So, your problem is ((3x+2))/4) = ((8x-1)/5)?
If so, X= 14/17
go here: https://www.meta-chart.com/share/untitled-14808