x+0.3=1.8 x-1.5=4 5x=1.5 x÷1.1=3 3+x=5.4 x-6x+0.3=1.8 x-1.5=4 5x=1.5x÷1.1=33+x=5.4 x-6=7.60.2x=6 x÷5=15

5x-x=2.4 1.5x-x=1 6.6x-6x=1.8 2x-2/3x=3/4 解方程 x+0.3=1.8 x-1.5=4 5x=1.5 x÷1.1=3 3+x=5.4 x-6x+0.3=1.8 x-1.5=4 5x=1.5x÷1.1=33+x=5.4 x-6=7.60.2x=6 x÷5=15 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 0.3+0.3x=0.39 x= 2x-1.5x=7.6x x= 0.36x÷0.3=1.2 x=6（x+1.2)=18.6 x= 7x+2x = 8.1 x= (x-5）÷3=1.7 x=5（x+1.1)=15.5 x= 9x+25=70 x= 7x-4x=2.1 x= x-2x+3x-4x+5x.+99x-100x=25求解 2x+3x+4x+5x+x+6x+7x=100 (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=? x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? 提取公因式:已知x*x-5x+1=0 求x*x*x-4x*x-4x-1 (3x-1)/0.5=(4-x)/0.3+(3x+5)/1.5 x得多少? x^-6x+5=x+4 5*4x+x*x=80 y=|-x.x+4x+5| 写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4 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 解方程怎么验算?如：x+0.3=1.8 3+x=5.4 x-1.5=4 x-6=7.6 5x=1.5 0.2x=6 x÷1.1=3 x÷5=15