Respuesta :

The correct answer is 25/4. 
Hope this helps!!! (The slash represents a fraction bar)
Vimal1
So we first group the like terms
3x + 8x + x - 13 + 10 = 72
We now make x the subject
3x + 8x + x = 72 + 13 -10
Evaluate
12x = 75
x = 75/12
x = 6.25