Respuesta :

Step 1. Subtract 24 from both sides
s = 90 - 24
Step 2. Simplify 90 - 24 to 66
s = 66
s + 24 = 90

This is a one-step problem. so, all you have to do is subtract 24 on both sides:

s + 24 - 24 = 90 - 24

s = 66

Check your work:

66 + 24 = 90

90 = 90

Hope this helps!!
~Kiwi