Question 30697
5t+1>3t-13 ----(1)
5t-3t > -13-1  (grouping like terms, changing sign while changing side)
2t > -14
t > -14/2  (division by  a positive quantity does not alter the inequality 
and so here greater than remains greater than)
That is  t > -7
Answer:  t > -7

7t+15>3t-13    ----(2)
7t-3t > -13-15  (grouping like terms, changing sign while changing side)
4t > -28
t> -28/4
(division by  a positive quantity does not alter the inequality 
and so here greater than remains greater than)
That is t > -7
Answer:  t > -7