[tex]\frac{s-7}{3}[/tex] = 2
[s is subtracted from 7, the result of s - 7 is divided by 3, s - 7 divided by 3 equals 2]
Multiply 3 on both sides
[tex]\frac{s-7}{3}(3) = 2(3)[/tex]
s - 7 = 6
Add 7 on both sides
s - 7 + 7 = 6 + 7
s = 13
[13 - 7 = 6 -----> 6 ÷ 3 = 2]
