8x+2x*4=488x+8x=4816x=48 x=48÷16 x=3
原式为:(5-X)(8-X)=24 40-5X-8X+X^2=24 X^2-13X-26=0 x=(13+-根号105)/2
12x十35=13x一48解:12x十35=13x一48 35+48=13x-12x x=83
11x40十89x40十8x11=(89+11)x40+8x11 =4000+88 =4088
54x13+131+13X45=13x(54+1+45)=13x100=1300
8X+2*8=408X+16=408X=40-168X=24 X=3
13x十11(104一x)=124013x+1144-11x=12402x=100 x=50
8x-2x=11x 6X=11X 5X=0 X=0
8x+40=13x-108X-13X=-40-10-5X=-50X=10
解:移项 8x+2x-11x=1-6-7 合并同类项 -x=-12 系数化1 x=12