46 + (54 + 39) + 21 - 5* =155*x.
1.54+39=93.
2.93+46=139.
3.139+21=160.
4.160-5*x=155*x.
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46 + (54 + 39) + 21 - 5* =155*x.
1.54+39=93.
2.93+46=139.
3.139+21=160.
4.160-5*x=155*x.