Answer
Success!
s=22.5

↓Steps Explained:↓

Solve for s

5s - 45 = 3s

Group variables

Group our variables 5s and 3s
subtract 3s from both sides

5s - 45 - 3s = 3s - 3s

Cancel 3s on the right side:

2s - 45 = 0

Divide each side by 5

5s
5
=
  
-45
5

Group constants

Group our constants -45 and 0.
add 45 to both sides

2s - 45 + 45 = 0 + 45

Cancel 45 on the left side:

2s = 45

Divide each side of the equation by 2

2s
2
=
  
45
2

s = 22.5

Final Answer

s=22.5
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