x÷0.8=4.9

x÷0.8=4.9 X+0.8X=? (x+x)+(x-x)+(x*x)+(x÷x)=81 4×(0.8+X)=72 8X+2X=31.4 (X+1.8)÷4=2.5 3X+5X-4X=1.6 解方程 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 x-0.8x=16 x=? 0.8x=x-30 x= x-0.8x=0.4x=? X-0.8X=6 X=? X÷48%=X+(X+32) 化简 [3x/(x+2)-x/(x=2)]÷x/(x^2-4)化简 [3x/(x+2)-x/(x-2)]÷x/(x^2-4 x-0.8x=0.8 0.8x-1.9=1.4x-4.9急,求解 X+0.5X=3 X-0.8X=8 x-0.8x=10 x-0.8x=22 x-0.8x=18 x-0.8x=120