Question

х+3х=6
12+8,3+1,5=95,3

Answer 1

x+3x = 6 
4x=6
x=6/4=3/2 = 1.5

12+8,3x+1,5=95,3 
8.3x = 95,3 - 12 - 1.5
8.3x=81,8
x= 81,8 : 8.3 
$frac{409}{5} : frac{83}{10} = frac{409}{5} * frac{10}{83} = frac{409*10}{5*83} =frac{409}{415} = frac{818*5}{83*5} = frac{818}{83}$