Math !
1.
x – 7 > 10

x >
(1 point)
x >
2.
3x ≤ 21

x ≤
(1 point)
x

3.
5a − 2 < 18
a <
(1 point)
4.
2t + 8 ≥ −4(t + 1)
t ≥
(1 point)

Treat the greater/less than signs as equals (=) signs, so...
1. x - 7 = 10
    x = 10+7 (re-arrange equation to get x as subject(on its own))
    x = 17
    x > 17 (don't forget to put back the greater/less than signs back)
try the rest on your own to get some practice, if you still don't get it message me and i will help you out