Respuesta :

Ok try to solve this equation backwards.

1) 0.45 (d - 1.2) + 0.67 - 0.67 = 5.53 - 0.67
2) (0.45 (d - 1.2)) divided by 0.45 = 4.86 divided by 0.45
3) d - 1.2 + 1.2 = 10.8 + 1.2
4) d = 12