9(x-3)+3x等于60,这题怎么急急急!::>_
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9(x-3)+3x等于60,这题怎么急急急!::>_
9(x-3)+3x等于60,这题怎么急急急!::>_<::
9(x-3)+3x等于60,这题怎么急急急!::>_
9x-27+3x=60 12x-27=60 12x=60+27 12x=87 x=87/12 x=7.25
9(x-3)+3x=60
12x-27=60
12x=87
x=29/4