Respuesta :

Answer:

x = -4.02

Step-by-step explanation:

3 4 x + 1 4 (x + 12) − 12 = 4x − 21

Open bracket

34x + 14x + 168 - 12 = 4x - 21

Collect like terms

34x + 14x - 4x = -21+12-168

44x = -177

Divide both sides by 44

x = -177/44

x = -4.02

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