Respuesta :

wegnerkolmp2741o

Answer:

45

Step-by-step explanation:

The three angles of a triangle add to 180 degrees

3x+5x+4x = 180

Combine like terms

12x = 180

Divide by 12

12x/12 =180/12

x = 15

The smallest angle is 3x

3(15) = 45

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