51-【26.7*0.375-（8.3-7又37/40)+?除以2又2/3】*4/45=50

51-【26.7*0.375-（8.3-7又37/40)+?除以2又2/3】*4/45=50 若51-【26.5×0.375-(8.3-7又37/40)+未知数÷2又2/3】=50.那么求未知数 0.375×2500+375×0.24+51×3.75简便方法 51-[26.5乘0.375- （8.1725-37/40）-Q除以8/3】=50 求Q 34:51,0.375:7/8,4.2:9.1,3/4:3/8化成最简单的整数比 8.3*63+8.3*38-8.3急! 8.3*63+8.3*38-8.3急! 5.6×0.375-0.375×5.4-0.375×0.9 4.7*8.3+5.2*8.3+0. 0.375*0.375怎么简算 5.6*0.375+0.375*5.4-37.5% 13.5×26.7竖式,要清楚 51~ 51 51 8.3×1.24-8.3×0.24的简便计算 8.3*8.3*9的简便运算 8.3乘8.3乘9简便运算