Math help? checking my answers?

-Simplify: 3(4x + 2y) 鈥?4(6x + 6y)

Simplify: 5(x 鈥?8) 鈥?3(4x + 5)

Simplify: 2x + 5(x 鈥?2) = 3(x 鈥?5)



I just need help checking my answers i already have them written but i already have a bad grade and i don't need a worse one. lol