(3x+0.8)-x=6.4

(3x+0.8)-x=6.4 X+0.5X=3 X-0.8X=8 8x-5.5x=7.57.2x÷3.6=2 3x＋6x-8x=0.7 12x-2x-5x=4.512x-x=0 5x＋x=1.8 3.2x＋1.8x=64.8x-0.8x=6 6.3-0.3x=9.6 8.6x-8.5x=0.720x-2x=36 9x＋6x=4.5 18x-12x=5.42x-1.6x=3.6 18x＋3x=7×6 1.2x-0.5x=0.71.3x＋2.7x=1 4x-3.2x=6.4 0.8x＋3.2x＋3x=562.8x-2x=7.2 用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. 不要应用题!31.5 x=83 44-4x=24 48 0.5x=63(x 0.8)0.5=1.6 32x-7x=420 9x=18.9x 7.25X=13 x-19.76=2.41 7x-6.8=14.2 5X 7.5=25 8x 6.4=8.64 4X-8=59x-4x=275 x-9.07=8.72 X+9x=45.2 8x 42=170 3x 4x=161 18x-x=34042 X-60.4=65.6 x-960=780 这些不准有了,要 X+0.8X=? 3x*x=1600+x*x-80x (X+1)X(X+2)X(X+3)=504 0.8X(12-x)=6.4 一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X 2.8x-0.8x=20-3x怎么解 0.8x+3=1.2x+0.2怎么求x x-4/1x=8/3 x-0.8x=22 3/2x+2/1x=42x-4/1x=8/3 x-0.8x=22 3/2x+2/1x=42 3X+17=6.4X x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? x-4/1x=8/3 x-0.8x=22.3/2x+2/1x=42 1.x-0.7x=2.342.x-0.8x=123.4（3x-x）=64 解方程：x-4分之一x=8分之3,x等于过程：x-0.8x=22x等于：