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3x - 3 = 8 - 2
3x = 6 + 3
3x = 9
x = 3
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4 . x + 8² : 4 = 68
4x + 68 : 4 = 68
4x + 17 = 68
4x = 51
x = 12.75
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x + 111 - 84 = 4³ . 5
x + 27 = 320
x = 293
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( x + 41 ) . 2 = 108
2x + 82 = 108
2x = 26
x = 13
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La respuesta es la alternativa D.