Respuesta :

michellechitsaka

Answer:

X=11

Step-by-step explanation:

3x+8x-9=112

11x-9=112

11x=112+9

11x=121

11÷11x=121÷11

X=11
combine 3x and 8x so you get 11x
so 11x-9=112 then u add nine to -9 and 112
the two nines cancel out then you get
11x=121 here you divide both sides by 11
so x= 11

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