4ˣ = 8,
(2²)ˣ = 2³,
2²ˣ = 2³,
2х = 3,
х = 1,5 (Б),
3ˣ = 9⁽ˣ⁻¹⁾,
3ˣ = (3²)⁽ˣ⁻¹⁾,
3ˣ = 3⁽²ˣ⁻²⁾,
х = 2х - 2,
х - 2х = -2,
-х = -2,
х = 2,
7¹⁻⁴ˣ = 1,
7¹⁻⁴ˣ = 7⁰,
1 - 4х = 0,
-4х = -1,
х = 1/4 (или 0,25) (Г),
(1/3)⁽ˣ⁻¹⁾ = 27,
(1/3)⁽ˣ⁻¹⁾ = 3³,
(1/3)⁽ˣ⁻¹⁾ = (1/3)⁻³,
х - 1 = -3,
х = -3 + 1,
х = -2 (В),
6¹⁰ˣ⁻¹ = 36,
6¹⁰ˣ⁻¹ = 6²,
10х - 1 = 2,
10х = 2+1,
10х = 3,
х = 0,3 (Г),
9 * (1/9)ˣ = 81,
9¹ * (1/9)ˣ = 9²,
9¹ * 9⁻ˣ = 9²,
9¹⁻ˣ = 9²,
1 - х = 2,
-х = 2 - 1,
х = -1 (А)