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Can someone please explain to me where my teacher got the -3x - 15y = -135 from? I understand how to do this but I have no idea how she got those numbers.

Can someone please explain to me where my teacher got the 3x 15y 135 from I understand how to do this but I have no idea how she got those numbers class=
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Respuesta :

shazawolf

Answer:

she got those numbers from the  angles angle shape

Step-by-step explanation:

im middle school and i dont know how to solve this but i see its not that completad

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