Question

$7 x + 5 = 68 - 2 x$

Answer 1

7x + 5 = 68 - 2x
7x + 2x = 68 - 5
9x = 63
x = 63/9
x = 7

Answer 2

7x+5=68-2x

7x+2x=68-5

9x=63


x=63÷9

x=7

S={7}