Hey there!!
Given equation :
... 2t + 8 > -4 ( t + 1 )
Using the distributive property :
... 2t + 8 > -4t - 4
Adding 4t on both sides :
... 6t + 8 > - 4
Subtracting 8 on both sides :
... 6t > - 12
Dividing by 6 on both sides :
... t > -2
Hence, the number in the blank is -2.
Hope my answer helps!!