(1.4x+11.2)÷5=1.4x÷3

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(1.4x+11.2)÷5=1.4x÷3
(1.4x+11.2)÷5=1.4x÷3

(1.4x+11.2)÷5=1.4x÷3
题目没错,一步一步的解
(1.4x+11.2)÷5=1.4x÷3
1.4x+11.2=1.4x÷3*5
1.4x+11.2=7x/3
14x/10+11.2=7x/3
42x/30+11.2=70x/30
70x/30-42x/30=11.2
(70/30-42/30)*x=11.2
28x/30=11.2
28x=11.2*30
x=11.2*30/28
x=12

(1.4x+11.2)÷5=1.4x÷3 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 5x+2x=42 15+2x-3=48 2x+3x+17=37 6x-3x=6÷5 9x-2x=1.4+0.07 7(2x-6)=15.4解上列的方程 5x十2x=42 15十2x一3=48 2x十3x十17=37 6x一3x=6÷5 9x一2x=15x十2x=4215十2x一3=482x十3x十17=376x一3x=6÷59x一2x=1.4十0.077(2x一6)=15.4 解方程.2.5x=14 3.4x-48=26.8 42x+25x=134 x-7.9=2.6 x解方程.2.5x=143.4x-48=26.842x+25x=134x-7.9=2.6x÷3=1.22x-97=34.213(x+5)=169 化简:2|x| -3x÷|2x-|5x|| X×X-3X+1=0求分式X×X÷〈X×X×X×X+3X×X+1〉 x÷5+24=x÷3 6.8+12÷x=10.8,14-0.5(x+3)=7.8,3.5x-3x-10=8,7.9-5x=7.8÷210x-20=6x,10+6x=8x,2(x+54)=8x,25-2x=5+2x 解方程,5%x-7.5%x=22.5 25%x-7%x=36 2.3%x+x%=6.6 x-30%x=1.4 x÷50%=10 65%x-25%x=8 已知x²+4x-1=0,求2x四次方﹢8x³-4x²-8x+1一已知x²-5x+1=0,求x²-x+1÷x²-1÷x的值二已知x=√5-1,求x四次方+3x²-2x²-4x-2之值 (2/3x-2/x+y(x+y/3x-x-y))÷x-y/x,其中5x+3y=0 x-x÷5=244 x-13=96-x+13 12x=10(x+20) 3.6x÷2=7.2×2x-x÷5=244x-13=96-x+1312x=10(x+20)3.6x÷2=7.2×2x÷3-x÷4=5这些题方程怎么解, 1.4/5÷x=8 2.(1-7/9)x=2/15 3.3/4x-1/3x=5/12 1.4(x+1)²—(2x+5)(2x-5) 2.2x 乘 (二分之一x²—1)—3x(三分之一x²+三分之二) 3,3(y—z)²—(2y+z)(—z+2y) 4.[x(x²y²—xy)—y(x²—x³y)] ÷3x²y 请问(x+x)×x÷x﹣x=25 x=?(x等于同一数) 8x-5.5x=7.57.2x÷3.6=2 3x+6x-8x=0.7 12x-2x-5x=4.512x-x=0 5x+x=1.8 3.2x+1.8x=64.8x-0.8x=6 6.3-0.3x=9.6 8.6x-8.5x=0.720x-2x=36 9x+6x=4.5 18x-12x=5.42x-1.6x=3.6 18x+3x=7×6 1.2x-0.5x=0.71.3x+2.7x=1 4x-3.2x=6.4 0.8x+3.2x+3x=562.8x-2x=7.2 x²+2x/x²-6x+9÷x²-4/x²-3x ,