Question 93099
-7 < -2a + 5 <=1
-7-5 < -2a + 5-5 <=1-5  [isolate the unknown variable (a)]
-12 < -2a <=-4

-12/-2 > -2a/-2 =>-4/-2 [divide by (-2) and flip the signs]
.

6 > a => 2