Respuesta :
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
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