hola :3
[tex]3(x-4)=4x+48[/tex]
[tex]3x-12=4x+48[/tex]
[tex]3x-12+12=4x+48+12[/tex]
[tex]3x=4x+60[/tex]
[tex]3x-4x=4x+60-4x[/tex]
[tex]-x=60[/tex]
[tex]x=-60[/tex]
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hola :3
[tex]3(x-4)=4x+48[/tex]
[tex]3x-12=4x+48[/tex]
[tex]3x-12+12=4x+48+12[/tex]
[tex]3x=4x+60[/tex]
[tex]3x-4x=4x+60-4x[/tex]
[tex]-x=60[/tex]
[tex]x=-60[/tex]
saludos
att :sam