Respuesta :

Answer:

x = 9

Step-by-step explanation:

Answer: x = 9

Step by step

31x + 81 = 360

Step 1: Subtract 81 from both

31x + 81 – 81 = 360 – 81

31x = 279

Step 2: Divide both sides by 3.

31x/3 = 279/31

x = 9

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