Question

What is 9 = 2s + 1?​

Answer 1

Subtract 1 from both sides

9 - 1 = 2s

Simplify 9 - 1 to 8

8 = 2s

Divide both sides by 2

8/2 = s

Simplify 8/2 to 4

4 = s

Switch sides

s = 4

Answer 2

Hello! Hope this helps! -peachimin