甲、乙、丙、丁四人一共做了370个零件，如果把甲做的个数加10个，乙做的个数减去20个，丙做的个数乘以2，丁做的个数除以2，四人做的零件数就正好相等．那么乙实际做了多少个零件？,h:`4@1R3u+q4s8P'Z+m,E
算式：提示(W3N,S3|6x0x0X+B.G7X+[/L,\0o+y.N7f:V,h:`4@1R3u+q4s8P'Z+m,E
答：乙实际做了(~9b3_:M*j,f'`/m9^:m个零件。,h:`4@1R3u+q4s8P'Z+m,E