[0.2(0.2-x)]÷0.01+1.2x=0.12+20x

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[0.2(0.2-x)]÷0.01+1.2x=0.12+20x[0.2(0.2-x)]÷0.01+1.2x=0.12+20x[0.2(0.2-x)]÷0.01+1.2x=0.12+20x[0.2(0.

[0.2(0.2-x)]÷0.01+1.2x=0.12+20x
[0.2(0.2-x)]÷0.01+1.2x=0.12+20x

[0.2(0.2-x)]÷0.01+1.2x=0.12+20x
[0.2(0.2-x)]÷0.01+1.2x=0.12+20x
[0.2(0.2-x)]*100+1.2x=0.12+20x
4-20x+1.2x-0.12-20x=0
38.8x=3.88
x=0.1

1.当X=12时,X+19()30,60-X()32 2.X=0.2时,0.6X()0.12,X÷2()0.2 0.2(0.2-x)÷0.01+1.2x=0.12+20x [0.2(0.2-x)]÷0.01+1.2x=0.12+20x 0.2(0.2-x)/0.01+1.2x=0.12+20x 1.将x/0.2-(0.5+0.01x)/0.03=1的分母化为整数,得( ).A.x/2-(0.5+0.01x)/3=1 B1.将x/0.2-(0.5+0.01x)/0.03=1的分母化为整数,得( ).A.x/2-(0.5+0.01x)/3=1 B.5x-(50+x)/3=100 C.x/20-(0.5+0.01x)/3=100 D.5x-(50+x)/3=12.方程2x+a=1与方程 21分之10x÷3分之2=7分之3x-3分之1x-2分之1x=190x-53x=7408.5x-6.9x=43.3x-200=0.2x+1101.02+0.4x+2.6x=3.428.9x-67=4.5x+656x-58=3x+1410x-20=5x+806x+5=10x-3420-1.4x=9.8x-288.2x+5.4x=272 解下面方程 x+0.3=1.8 3+x=5.4 x-1.解下面方程x+0.3=1.8 3+x=5.4 x-1.5=4 x-6=7.6 5x=1.5 0.2x=6x÷1.1=3 x÷5=15 (0.1x-0.2)÷0.5-(0.01x+0.03)÷0.01=(2x-5)÷3-3的解 0.02x-0.01/0.03-0.4x+0.2/0.5-3X+2/4=-3求x 问几道数学题.这是初二的题1÷《这是什么竖线》X.有什么意义x+3÷3x+1,有什么意义X÷0.2x+1.有什么意义这是下一道题目.当X取什么值得时候.分式的值等于零?2x-3÷x+2X的平方-1÷X+1 x-30-0.2x=0.5x x-0.2x=80 求x 3+0.2x/0.2-0.2+0.03x/0.01=0.75 解方程组:1.{3x+2y=14 2.{x-5y=0 3.{x÷2+y÷3=2 {x=y+3 {3x+2y=17 {0.2x+0.3y=2.8 问七下数学因式分解的简单应用的几道题目计算:1.(-4m^2+n^2)÷(2m+n) 2.(x^2-4x+4)÷(1-1/2x)3.(1-81x^4)÷(1+3x)÷(1+9x^2) 解方程:4.(2x-1)(x+3)=0 5.2x^2+3x=0 6.(x+5)^2=1 7.(2x+1)^2=(1-x)^2 8.-0.2x^2+5x=0 9.(2-x)^2=4(x+3)^2 解方程:8x -4.5÷0.2=16 3(x+30)=6x+30 3-(5-2x)=x+273x-(67-84x)-14=76 15-(7-5X)=2X(11-3X) X+(X+10)+(x+8)=36×3 11×(4-x)+15×(4-X)=30 (X-8)/X=0.2(X-8)/X=0.2 0.03分之0.01+0.02x+0.2分之1-0.3x=1.