Question

* - 3 (- * + 1 ) - 7 = 6
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Answer 1

Respuesta:

$x - 3( - x + 1) - 7 = 6 \\ x + 3x - 3 - 7 = 6 \\4x = 6 + 10 \\ x = \frac{16}{4} \\ x = 4$