Respuesta:
[tex](90 - \times ) + 30 = 2 \times \\ 120 = 3 \times \\ \times = 40[/tex]
Explicación paso a paso:
[tex](90 - x) + 30 = 2x \\ 90 - x + 30 = 2x \\ 120 - x = 2x \\ - x - 2x = - 120\\ - 3x = - 120 \\ x = 40[/tex]
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Respuesta:
[tex](90 - \times ) + 30 = 2 \times \\ 120 = 3 \times \\ \times = 40[/tex]
Explicación paso a paso:
! espero haberte ayudado en tu tarea!
[tex](90 - x) + 30 = 2x \\ 90 - x + 30 = 2x \\ 120 - x = 2x \\ - x - 2x = - 120\\ - 3x = - 120 \\ x = 40[/tex]