2+x=8

Answer 1

2+x=8

2 + x - 2 = 8 - 2
x = 6

Check it out --
Does 2 + 6 = 8?

Answer 2

17=5-3p

Answer 3

17=5-3p
17 - 5 = 5 - 5 - 3p
12 = -3p
-4 = p