Respuesta :

malorm25

Step-by-step explanation:

3x+12=45

3x=45-12

3x=33

3x/3=33/3

x=11

jcherry99

Answer:

Step-by-step explanation:

Equation

3x +12 = 45                  Subtract 12 from both sides

Solution

3x + 12 - 12 = 45 - 12

3x  = 33                       Divide by 3

3x/3 = 33/3

x = 11

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