I need someone to write down the steps please and solve 4 for me please i will fail

Step-by-step explanation:
2r - 18 < = 5r + 3
Subtract both side by 3
2r - 18 - 3 <= 5r +3 - 3
Simplify
2r - 21 <= 5r
Subtract both side by 2r
2r - 2r - 21 <= 5r - 2r
Simplify
-21 <= 3r
Divide both side by 3
-21 ÷ 3 <= 3r ÷ 3
Simplify
-7 <= r