1. 4y > 20
4y / 4 > 20 / 4
y > 5
2. 7x + 21 < -28
7 < -28 - 21
7x < -49
x < -7
3. -12m - 24 > 36
-12m > 36 + 24
-12m > 60
m < - 5
hope this helped :)
