Respuesta :

tonytlan06

First, move the 5 over: 4/7(21+3x)=36. Then, times by 7: 4(21+3x)=252. Now, expand the left side: 84+12x=252. Move the 84 over: 12x=168. Finally divide 168 by 12 which is 14.

x = 14

Answer:

X=14

Step-by-step explanation:

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