5.5x 2.5x=6.4

5.5x 2.5x=6.4 解方程5.5x 2.5x=6.4 解方程 5.5x+ 2.5x=6.4 5 （X+X)+(X-X)+(X*X)+(X/X)=100 x+x-2.5+x-4=85 解方程：6x+8.3=11.18-2.5x=5.5.x+6.5x=1.2 x+5.5x=13 9x+x=5.5 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 2*x*x+2.5x=13 x=? X乘X减2.5X=6,　　求X! 6x-2.5x=423x+2.5x=55（x-5.5）*8=62.8 ２.5x-x=15 x =2.5(x-180) x*x*x*x*x=80000? 2x+3.6*2=12.4 3(x+3.6)=18.6 x+3.5x=13.5 27x-4x=34.5 3x+2.8=4.3 12x-24=6 3x+9=10.5 5x+1.2=4.7 3*1.5+2x=11.55.4+1.8x=6.3 4.4x-2.7x=5.78 2.5x-3.6=6.4 2x+3.6*2=12.4 3(x+3.6)=18.6 x+3.5x=13.5 11(x-3)=5.5*4 7.5x+30=2.5x+10011(x-3)=5.5*4 7.5x+30=2.5x+100 x+125=370 520+x=710 x-4.9=6.4 120-x=25 7.8+x=2.5 x+8.5=12解下列方程.