(-0.4)x(+25)x(-5)=?(-10)x(-0.1)x(-8.25)=?(-15)x(-8)x125=?请把列示也写出来~
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(-0.4)x(+25)x(-5)=?(-10)x(-0.1)x(-8.25)=?(-15)x(-8)x125=?请把列示也写出来~
(-0.4)x(+25)x(-5)=?
(-10)x(-0.1)x(-8.25)=?
(-15)x(-8)x125=?
请把列示也写出来~
(-0.4)x(+25)x(-5)=?(-10)x(-0.1)x(-8.25)=?(-15)x(-8)x125=?请把列示也写出来~
(-0.4)x(+25)x(-5)=(-10)x(-5)=50
(-10)x(-0.1)x(-8.25)=1x(-8.25)= -8.25
(-15)x(-8)x125= 120x12515000
1. =50
2. =-8.25
3. =15000
x-2x+3x-4x+5x.+99x-100x=25求解
x/25+x/5=x-19
x/25+x/5=x-9
1x(25%-X)=5
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
4x-5=25-9x+x 求x?
5x+15x =( + )x =20x
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
解下列方程 x+4.8=7.2 x-6.5=3.2 x÷8=0.4 6x+18=48 3(x+2.1)=10.5 12x-9x=8.7解下列方程 3.8+x=6.3 x-7.9=2.6 2.5x=14 x÷3=1.2 3.4x-48=26.8 2x-97=34.2 42x+25x=134 13(x+5
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
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=
25x X 5 +15x X 10 +12x X 15 =7280
3/x-1=4/x 6/x+1=x+5/x(x+1)
(x+x)+(x-x)+(x/x)=11.2
方程:[X-5-5*(X-5)/X]/X=16/25
[x-5-5(x-5)/x]/x=16/25
=(x-5)^2为什么等于x^2-10x+25(为什么有-10x)
160乘25%-1.3x=17.9 x/5-x/6=0.4 3(x+2)=40+11 0.3/0.5=x+1/2x-1 2.5/(x—0.5)=25% 1/3:0.25=80%:x160乘25%-1.3x=17.9x/5-x/6=0.43(x+2)=40+110.3/0.5=x+1/2x-12.5/(x—0.5)=25%1/3:0.25=80%:x