4x-(25-x)=70
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4x-(25-x)=70
4x-(25-x)=70
4x-(25-x)=70
4X-25+X=70
5X-25=70
5X=70+25
5X=95
X=19
4x-(25-x)=70
0.3+0.3x=0.39 x= 2x-1.5x=7.6x x= 0.36x÷0.3=1.2 x=6(x+1.2)=18.6 x= 7x+2x = 8.1 x= (x-5)÷3=1.7 x=5(x+1.1)=15.5 x= 9x+25=70 x= 7x-4x=2.1 x=
4X+2(25-X)=70 4X+50-2X=702 X=20 X=10 的2X怎么来的4X+2(25-X)=70 4X+50- 2X =702 X=20 X=10 的2X怎么来的?(空出来的数字)
x-2x+3x-4x+5x.+99x-100x=25求解
60+2x=185 7x+22=43 16+8x=40 4x-54=14 0.5x-1.2×5=3.8 (x+3)÷2=10.5 6x+4×6=72 5x-16.5×3=25 x+4.8x=29 12.5x-0.9x=52.2 6x+9x-12x=2.37 8x-6=70 12x+48=132 4x+8x=14.4 5.8x-1.6x=12.6 3x+2x×12=42 6(2x-6)=12.6....
4.2-0.6x=3.6x 5x+2x=33.6 7x-4x=0.75 2x+7x+2.1=12 56x-32x-119=361 x+5=2x 3x+9=6x 4x-28=2x 2x+18=7x 5x=25*4-15x 7x-x+2*3=29.4 (28.8+5.5x+3.2)除2=71
x+(x+20)+(x-10)+70+x=540 .
4x-5=25-9x+x 求x?
X+X+2+X+4-(X+4)=26
(16x^4+4x^2+x)/x=?
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
5分之4×(10-X)=10 40+20%X=70 X-25%X=75
(x+1)(x+2)(x+3)(x+4)+1(x+1)(x-2)(x+3)(x-4)+25
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
解方程:x-2x+3x-4x+...+99x-100x=25
解方程:x-2x+3x-4x+.+99x-100x=25
x-2x+3x-4x+...+99x-100x=25
3/x-1=4/x 6/x+1=x+5/x(x+1)