Question

$3 - y = 4$
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Answer 1

Answer:

$3 - y = 4 \\ \\ adding \: ( - 3) \: both \: sides \\ \\ we \: get \\ \\ 3 - y + ( - 3) = 4 + ( - 3) \\ \\ 3 - y - 3 = 4 - 3 \\ \\ - y = 1 \\ \\ multiplying \: both \: sides \: by \: ( - 1) \\ \\ \\ we \: get \\ \\ - y \times ( - 1) = 1 \times ( - 1) \\ \\ \\ { \huge{ \red{ \boxed{y = - 1}}}}$

Answer 2

⠀⠀⠀$3 - y = 4$

⠀⠀⠀$- y = 4 - 3$

⠀⠀⠀$- y = 1$

⠀⠀⠀$y = - 1$

⠀ANSWER : $y = -1$