2.6×1.9-0.6×1.9-1.9 5.6×0.99 求简便计算

2.6×1.9-0.6×1.9-1.9 5.6×0.99 求简便计算 X-2.6*3=1.9 2.5x(1.9+1.9+1.9+1.9)=? 2.6×1.9÷1.6×1.9的简便运算法 5X-0.6=1.9 2.5x(1.9+1.9+1.9+1.9)的简便运算 简便运算.1.9*[(1.9-1.9)/1.9] 怎么做? 0.46×1.9+0.5×1.9简算 14*1.9+32*1.9简算 计算：5.7-（-1.9）-0.6= [1.9+(0 6.9-0.84)除以0.6]×4.5 1.2×3.8+2.4×1.9+4.8×0.6 ①3.4+1.1=4.5②1.14/3=0.38③4.5-2.6=1.9④0.6*1.9=1.14列综合算式 0.19*2.6-0.16*1.9 7.3*2.4-14*0.73 谁会简算啊, 1.9x+2.6=6.5得解方程 1.23÷1.9+1.9-0.73÷1.9怎样简便计算 [1.9+1.9*(4.8-3.81)]/(2.9-2.8) 12.6-1.9+1.9-0.54的简便计算