Can someone help me with these few math questions im almost done

Question

i just cant seem to answer these 3 can anyone help me i just dont understand them

10. Solve for x: 1/4x - 2 > 1/2x 3

a. x < -20

b. x > -20

c. x > 5/2

11. Solve for x: -0.82x 3.2 > 5.58x

a. x < 2

b. x < 1/2

c. x > 1/2

12. Solve for x: 1/3x - 2 < 4/5x 5

a. -x < 15

b. x < -15

c. x > -15

Answer 1

10. b

11. c

12. b