Respuesta :

3x + 11x = 84

add 3x and 11 x

14x = 84

Take 14 to other side and divide it

[tex]x \: \: = \frac{84}{14} [/tex]

x = 6 answer

Answer:

[tex] \sf3x + 11x = 84[/tex]

[tex] \sf14x = 84[/tex]

[tex] \sf \: x = \frac{84}{14} [/tex]

[tex] \sf \: x =6 [/tex]

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