11x+-2x=100-9x15-(8-5x)=7x+(4-3x)3(x-7)-2[9-4(2-x)]=223/2[2/3(1/4x-1)-2]-x=22(x-2)+2=x+10.4(x-0.2)+1.5=0.7x-0.3830x-10(10-x)=1004(x+2)=5(x-2)120-...
100-20x=20X=455x-25x=60X=276y-75=1Y=123y-23=23Y=24x-20=0X=580y+20=100Y=153x-90=16X=22x+9x=11X=112y-12=24Y=380+5x=100X=47x-8=6X=265x+35=100...
20X-50=5028+6X=8832-22X=1024-3X=310X*(5+1)=6099X=100-XX+3=18X-6=1256-2X=204y+2=6x+32=763x+6=1816+8x=402x-8=84x-3*9=298x-3x=105x-6*5=42x+5=72x...
1.下列方程中,属于一元一次方程的是()A.B.CD.2.已知ax=ay,下列等式中成立的是()A.x=yB.ax+1=ay-1C.ax=-ayD.3-ax=3-ay3.一件商品提价25%后发现销路不是很好,欲恢复原价,则应降价()A....
5X+40=10036-15x=6一、判断题:(1)判断下列方程是否是一元一次方程:①-3x-6x2=7;()②()③5x+1-2x=3x-2;()④3y-4=2y+1.()(2)判断下列方程的解法是否正确:①解方程3y-4=y+33y-...
计算题0.4(x-0.2)+1.5=0.7x-0.38x=630x-10(10-x)=100x=54(x+2)=5(x-2)x=18120-4(x+5)=25x=18.7515x+863-65x=54x=16.183(x-2)+1=x-(2x-1)x=3/211x+-2x=100-...
20道一元一次方程带解答过程如下:1、2(x-2)-3(4x-1)=9(1-x)。2x-4-12x+3=9-9x。x=-10。2.11x+-2x=100-9x。18x=36。x=2。3.15-(8-5x)=7x+(4-3x)。15-8+5x=7x+4-3x。x=-3。4...
2(x-2)-3(4x-1)=9(1-x)11x+-2x=100-9x15-(8-5x)=7x+(4-3x)3(x-7)-2[9-4(2-x)]=22247x+114=3771x+3=12440x+61=22335x+103=171239x+51=119187x+255=67135x+203=1583x...
8.30x-10(10-x)=1009.4(x+2)=5(x-2)10.120-4(x+5)=2511.15x+863-65x=5412.12.3(x-2)+1=x-(2x-1)13.11x+-2x=100-9x14.14.59+x-25.31=015.x-48.32+...
11x+-2x=100-9x15-(8-5x)=7x+(4-3x)3(x-7)-2[9-4(2-x)]=223/2[2/3(1/4x-1)-2]-x=22(x-2)-3(4x-1)=9(1-x)11x+-2x=100-9x15-(8-5x)=7x+(4-3x)3(x-7)-2[9-4(2-...