5.4+5x=7.2-x

5.4+5x=7.2-x 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!)+. x-三分之一x-四分之一x(x-三分之一x)=5 7.2x-5.4x=25. 7.2x-5.4x=25.2 7.2X-5.4X=12.67.2X-5.4X=12.61.8X=12.6X=7 4.8X-6=7.2+5X x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 21分之10x÷3分之2=7分之3x-3分之1x-2分之1x=190x-53x=7408.5x-6.9x=43.3x-200=0.2x+1101.02+0.4x+2.6x=3.428.9x-67=4.5x+656x-58=3x+1410x-20=5x+806x+5=10x-3420-1.4x=9.8x-288.2x+5.4x=272 5x+3.2x=32.8. 7.9x2-1.5x=5.3. 5x+2.4×15x+3.2x=32.8. 7.9x2-1.5x=5.3. 5x+2.4×15=66 7.2x-5.4x=12.6. 8x-3x=26. 解方程 5.4X+X=12.8求X 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) (x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2 x-2x+3x-4x+5x.+99x-100x=25求解 x.x-5x+1=0,那么x.x+1/x.x 2x+3x+4x+5x+x+6x+7x=100 x(x-2)-2x(x+1)-3x(x-5) 其中x=负½ (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)