i. 4(x + 12) = 8

∴4x + 48 = 8

∴4x + 48 – 48 = 8 – 48 ….(Subtracting 48 from both sides)

∴ 4x = -40

∴ x = -40/4

∴ x = -10

ii. 3y + 4 = 5y – 6

∴ 3y + 4 + 6 = 5y – 6 + 6 ….(Adding 6 on both sides)

∴ 3y + 10 = 5y

∴ 3y + 10 – 3y = 5y – 3y ….(Subtracting 3y from both sides)

∴ 10 = 2y

∴ 2y = 10

∴ y = 10/2

∴ y = 5