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(3²)^(2x-1) = 3⁷
3^(2[2x-1]) = 3⁷
maka
2 (2x-1) = 7
4x - 2 = 7
4x = 7+2
4x = 9
x = 9/4
Maka nilai x yg memenuhi yaitu x = 9/4