4()0.2()0.5()()()0.6在括号里填上合适的数,使每一横行竖行斜行三个数的和都相等.

(+0.2)+(-0.2)+(+0.7)+(-0.3)+(-0.4)+(+0.6)+0+(-0.1)+(-0.6)+(+0.5)+(-0.2)+(-0.5)=?(+0.2)+(-0.2)+(+0.7)+(-0.3)+(-0.4)+(+0.6)+0+(-0.1)+(-0.6)+(+0.5)+(-0.2)+(-0.5)=? 0.4x-2.1/0.5-0.5-0.2x/0.03=0.6 x:1,2,3,4,5,y:0.6+3+0.1,0.6+6+0.2,0.6+9+0.3,0.6+9+0.3,0.6+12+0.4,06+15+0.5,写出用x表示y的关系式是 4()0.2()0.5()()()0.6在括号里填上合适的数,使每一横行竖行斜行三个数的和都相等. 巧算:0.1+0.2+0.3+0.4+0.5+0.6+0.7+0.8+0.9 0.1+0.3+0.5+0.7+..+2.9-0.2-0.4-0.6-...-2. 0.1-0.2+0.3-0.4+0.5-0.6+.+9.9-10+10.1巧算 (0.2+0.4+0.6+...+9.8+10)-(+0.1+0.3+0.5+...+9.7+9.9) 0.6*0.5-x=0.2怎么列方程 x/0.5-0.4x-0.6/0.2=2(-x+3) (0.4x-2.1)/0.5=(0.1+0.2x)/0.03-0.6 (0.4x-2.1)/0.5=(0.1+0.2x)/0.03-0.6 (0.2x+0.5)/0.04+(x-3)/0.6=12x 0.5+3(1-0.2X)> 0.4X-0.6 求0.4x+0.3y-0.2z-4=0,0.6x-0.5y+0.3z-5=0,0.5x+0.2y+0.5-24=0的解急麻烦写出过程 解方程组.0.5y-0.2x=1.2,0.3y-0.6=-0.2x 一元一次方程计算题:0.4x+2.1/0.5=0.5-0.2x/0.03 +0.6 0.4x+2.1/0.5=0.5-0.2x/0.03+0.6的解方程