Question

(X-1).2=18 helppp :))

Answer 1

Respuesta:

$( x - 1 ) 2 =18 \\2 ( x - 1 ) = 18 \\2x -2 = 18 \\2x - 2 + 2 = 18 + 2 \\2x = 20 \\x = \frac{20}{2}\\ x = 10$

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