I'd prefer to see you do as much as you can towards solving these problems yourself before asking for help.
-32-8m=-4(2m+8) becomes -32-8m=-8m-32 through multiplication.
When you have an outcome like this, that is, an equation that is true for all values of m, then the problem has infinitely many solutions.
-4(y-2)=2(-2+7)
Multiply out -4(y-2) and then multiply out 2(-2+7). You should obtain:
-4y + 8 = -4 + 14. Note that you could evaluate 2(-2+7) by doing the work inside parentheses first, obtaining 5, and then by mult. this result by 2, obtaining 10.
Then -4y + 8 = 10. Subtracting 8 from both sides, -4y = 2, and y = -1/2