The common difference is found by subtracting the first term from the second: 7 - 3 = 4.

Subtract 2x from both sides: 2x - 2 = 6. Then add 2: 2x = 8. Finally, divide by 2: x = 4.

Subtract 2 from both sides: 5x ≥ 10. Then divide by 5: x ≥ 2.

Subtract 1 from both sides: 4x = 12. Then divide by 4: x = 3.

Add 7 to both sides: 4x = 12. Then divide by 4: x = 3.

Factor the equation: (x + 4)(x - 2) = 0. The solutions are x = -4 and x = 2.

Subtract 5 from both sides: x > -3.