在横线上填上运算符号和适当的数。3Q-O:N'Q:Z0P2K6\-M'\.S/@(I-@/c
251+348+249=251+2z9B+p)N8l+348 765-146-54=765-（146 3r+?9p)D8h 3H7R*q(R6V;l3Q-O:N'Q:Z0P2K6\-M'\.S/@(I-@/c
（37×(f4i1F0S×125=37×（8 请选择√×6h(n1I)y.M9H 8z;[(?5c({9U4X6Q4^;I'{:^+@*N9w3i6S 854×199=854×(I4r.d3g)A-z2W)` 3y5V0L+h,e,E 0c*z(E*m*G5E'r7A-](u'u3Q-O:N'Q:Z0P2K6\-M'\.S/@(I-@/c