Respostas
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a) ( 1/2 ) ⁶ˣ ⁻ ¹⁵ = ( 1/2 ) ²ˣ ⁺ ²
6x - 15 = 2x + 2
6x - 2x = 2 + 15
4x = 17 → x = 17/4
b) 2ˣ/² = 2²/⁴
x 2
--- = -----
2 4
4x = 4 → x = 4/4 → x = 1
c) ( 1/3² )³ˣ ⁻ ¹ = ( 1/3 )²ˣ
6x - 2 = 2x
6x - 2x = 2
4x = 2
x = 2/4 → x = 1/2
d) ( 2⁴ )³ˣ ⁻ ¹ = ( 2³ )²ˣ ⁺ ⁵
12x - 4 = 6x + 15
12x - 6x = 15 + 4
6x = 19
x = 19/6
6x - 15 = 2x + 2
6x - 2x = 2 + 15
4x = 17 → x = 17/4
b) 2ˣ/² = 2²/⁴
x 2
--- = -----
2 4
4x = 4 → x = 4/4 → x = 1
c) ( 1/3² )³ˣ ⁻ ¹ = ( 1/3 )²ˣ
6x - 2 = 2x
6x - 2x = 2
4x = 2
x = 2/4 → x = 1/2
d) ( 2⁴ )³ˣ ⁻ ¹ = ( 2³ )²ˣ ⁺ ⁵
12x - 4 = 6x + 15
12x - 6x = 15 + 4
6x = 19
x = 19/6
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