As my high school algebra teacher used to say, show your math, because if I don't know what steps you took, I don't know what steps you didn't take, and if I don't know what questions you asked, I don't know what questions you didn't ask.
Kaip sakydavo mano matematikos mokytojas, parodyk savo sprendimą, nes jei nežinau, kokius veiksmus atlikai, nežinau ir kokių neatlikai, ir jei nežinau, kokius klausimus kėlei, aš nežinau, kokių klausimų tu neklausei.