Question

26-4s=9s what's the answer

Answer 1

you have to add 4s on both side which cancels -4 in -4s & it makes 9s in to 13s now so the problem looks like this:
26 = 13s now we divide 13 on both side to cancel the 13 in 13s so the answer is :
2 = s

Answer 2

26-4s=9s
⇔26=9s+4s
⇔26=13s
⇔s=2