2.1x+2.4×3.5=14.7 (100-5x)÷6=15 3x+4x=105 7x-x+8=2.1x+2.4×3.5=14.7(100-5x)÷6=153x+4x=1057x-x+8=14 准确率高,快有赏!

2.1x+2.4×3.5=14.7 (100-5x)÷6=15 3x+4x=105 7x-x+8=2.1x+2.4×3.5=14.7(100-5x)÷6=153x+4x=1057x-x+8=14 准确率高,快有赏! 9x-0.9乘7=2x+2.1 x=?9x-0.9乘7=2x+2.1 x=?还有：3(2x-1.2)=2(x+3.5) x=?2.4x-9.8=1.4x-9 2.4x-x=2.1 几道方程题不要只写x=多少的.7.8x-2.4x=10.88x+2x=31.42（x+1）=6（x+3.5）-2=4.9x-0.38x=1.24一定要写好过程，例如：x+3x=254（1+3）x=2544x=2544x/4=254/4x=63.4 15(x+2.4)+2.1x=180 6.4x-3.5=3.6x+2.1 2.4X-3.5X=5 3.5x-2.4*(45-x)=10 X(X-1)=X 1.(x*2-3x+3)/(x*2-3x+2)-(x*2-5x+7)/(x*2-5x+6)-1/(x*2-4x+3)2.1/x(x+1)+2/(x+1)(x+3)+3/(x+3)(x+6) 3.已知：x*2-3x+1=0,求x*2+1/x*2. x-2.4=1/2x+2.4 2.4^2 x 10 x 7 x 10^-1 = 6乘以4-0.5x=12.8 （24.5-x）乘以2-13=20 5x-x+1.8=3.6 （x+2.1）除以3=10.5 3.5乘以x=105 13.06-x=8.07 0.2（x-3.5）=1 12x-3.5x+85 1.2x-x=35 3-3x=0.3 3.5乘以6-0.2x=11.4 3.5乘以（6-0.2x）=17.5 5x-x=2.4 1.5x-x=1 6.6x-6x=1.8 2x-2/3x=3/4 解方程 解方程:(1)x-0.75x=12(2)2.8x+x=7.6(3)2.36x+2.64x=18(4)3.5x-1.5x=10.8 (1) 2.5+3X=1.1 (2) 12X-5X=2.1 (3) X-0.3X=1.4 X=1.1 X=2.1 X=1.4 X=?X=0.3 X=? x>=1,x x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,