120-4(x+5)=25 120-4(x+5)=25
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60%x+25=40 x+30%x=52 19-120%x=7 4分之3x-5%x=17.5 x-10%x=18 (1-25%)x=36 2x+30%x=9.2
X-X/12-X/7-X/8-X/4-X/20-X/5-30-120-300=50解方程
12—120%X=6 5分之3X—5%X=5.5 (1+25%)X=7.5 X—30%X=91 4%X+6%X=29.4 X+25%X=8.75
x-x/4-120=x/2
(X+5)((120/x)-4)=120
x-2x+3x-4x+5x.+99x-100x=25求解
计算x-2/5x+120=3/4x
求几道因式分解!x^2+9x+20x^2-5x+6x^2+x-2x^2+x-2x^2+x-2x^2-3x-18-x^2+7x-12-x^2-x+62x^2-4x-30-5x^2+25x+120
4/5x-x=120
x+2/3x=60 x-3/5x=120 4x+18x=1x+2/3x=60 x-3/5x=120 4x+18x=132!
x+3分之2 x=60 x-5分之3x=120 4x+18x=132x+3分之2 x=60 x-5分之3x=120 4x+18x=132
x+2/3x=60 x-2/5x=120 4x+18x=132
100-2x+5x=120(x+3)×5-2x=30100-(4x+1)-(4x+1)=204x+8=6x-10
100-2x+5x=120(x+3)×5-2x=30100-(4x+1)-(4x+1)=204x+8=6x-10
4x-5=25-9x+x 求x?
x-(x*1/5+15)-(x*1/4-25)=120
3根号(x^2-9)-4根号(x^2-16)-5根号(x^2-25)=120/x
X-2/5X-(X-2/5x)*3/4=120