1.2x-1.4=8.

1.2x-1.4=8. 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 方程：3（2x-1.2)=2(x+3.5) 2.4x-9.8=1.4x-9 x-9/6-x+2/3=x-1 x/5-1.5=-1.2x+5 3(5-1.2x)+1.4=x-9/6-x+2/3=x-1x/5-1.5=-1.2x+53(5-1.2x)+1.4=-2(0.3x-1)1-x=-2(3x-2)-12/3x-3/2=1/4x-3/4(6x-5)+[2x-(4x-1)]=-24 1.4x-x=9.8求x x+(x-1.4)+1.5x=33. 2+X=1.4X x+18=1.4x x-0.3x=1.4 X+5x=8. 1.2x=x+20 1.2X-30=X 1.2x-x=0. x-1.2x=9.6 x-40%x=1.2 1.2x+3=1.4x-0.9怎么解方程? 1.2X+3=1.4X-0.9解方程 x+x=() x*x=() x-0.8x=() 1.2*2y=()