Subtract 2 from both sides
7y < 5y + 12 - 2
Simplify 5y + 12 - 2 to 5y + 10
7y < 5y + 10
Subtract 5y from both sides
7y - 5y < 10
Simplify 7y - 5y to 2y
2y < 10
Divide both sides by 2
y < 10/2
Simplify 10/2 to 5
= y < 5