2) 3.5x−0.8x=0.81

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解方程,6x+3/2x=9 2x-4/3x=1/2x+9/2=12 x-0.8x=22

6x+3/2x=97.5x=9x=9÷7.5x=1.22x-4/3x=1/22/3x=1/2x=1/2*3/2x=3/4x+9/2=12x=12-9/2x=7.5x-0.8x=220.2x=22x=2

0.3x²+x=0.8 x²+3=2√3x x²+2x-2=0 3x²+4x-7

0.3x²+x=0.83x²+10x=8(3x+5)²=493x+5=±7x=-4或2/3x²+3=2√3xx²-2√3x+3=0(x-√3)

2X+0.8(24-X)=30

2x+0.8*24-0.8x=301.2x=30-0.8*241.2x=10.8x=9

解方程:x-1/2x=42 x-2/5x=3/8 x+0.8x=36 45-1/2x=5

x-1/2x=421/2x=42x=84x-2/5x=3/83/5x=3/8x=3/8÷3/5x=5/8x+0.8x=361.8x=36x=2045-1/2x=51/2x=45-51/2x=40x=8

x-4/1x=8/3 x-0.8x=22 3/2x+2/1x=42

x-四分之一x=八分之三0.75x=八分之三x=1/2X-0.8X=220.2x=22x=22/0.2x=110三分之二X+二分之一X=427/6x=42x=42*6/7x=36

解方程X-0.5X=15 X-0.8X=10 2.5X+2X=9

0.5x=15x=30再答:0.2x=10x=50再答:4.5x=9x=2再问:能写内容

四道方程:2x+6=5x 6x-28=2x 8(x-3.6)=0.8x 15x-110+7x=110

2x+6=5x5x-2x=63x=6x=26x-28=2x6x-2x=284x=28x=78(x-3.6)=0.8x8x-0.8x=28.87.2x=28.8x=415x-110+7x=11015x+

(1)2.8x-4.3=9.7 (2)3.6x-x=7.8 (3)3.5×6.2+0.8x=31.7 (4)6(x-3.

(1)2.8x-4.3=9.72.8x=9.7+4.32.8x=14x=5(2)3.6x-x=7.82.6x=7.8x=7.8/2.6x=3(3)3.5×6.2+0.8x=31.721.7+0.8x=

20+0.8x=x-14 112-4x=2x(80-4x)

20+0.8x=x-14x-0.8x=20+140.2x=34x=170112-4x=2x(80-4x)112-4x=160-8x8x-4x=160-1124x=48x=12

2(X+0.8X)=108

2(x+0.8x)=108解;2x+1.6x=1083.6x=108x=30

x-0.8x=46

x-0.8x=46(1-0.8)x=460.2x=46x=46÷0.2x=230如果帮到你,请记得采纳,O(∩_∩)O谢谢

f(x)=5x^5+2x^4+3.5x^3-2.6x^2+1.7x-0.8,用秦九韶法计算多项式当x=5时

次数---------系数5-------------54------------5*5+2=273------------27*5+3.5=138.52----------138.5*5-2.6=6

X-0.8X=2

X-0.8X=20.2X=2X=2/0.2X=10

x-78%x=8.8 (1+25%)x=46 25%x/2=5 x+30%x=52 6%x-0.8%x=10.4 7.3

奥数:1.1/422.568by王羲之再问:解方程题列式计算哪去了奥数的计算哪去了完整了选为满意答案再答:1.0.05x*7/10=0.8x=160/72.0.05x-3.7=21.3x=5003.2

六道解方程4×(0.8-x)=1.45+2/3x-1/2x=1210x+9=8x+19115%x+15%x=1.32x-

题目太多了请分开求助,我好多赚点采纳数哈:)多谢啦4×(0.8-x)=1.40.8-x=1.4÷4=0.35x=0.8-0.35=0.455+2/3x-1/2x=12(2/3x-1/2x)=12-5(

解方程:1.56/4x=0.156 0.8*13-2x=4.9 10*(15-x)=12 (x+2)*7=28 3.5x

1.56/4x=0.15610/4x=1x=4/10x=2/50.8*13-2x=4.90.8*13-2x=4.910.4-2x=4.92x=10.4-4.92x=5.5x=2.7510*(15-x)

x-4x=102 x-0.8x=22

x-4x=102-3x=102x=-34x-0.8x=220.2x=22x=110

x-0.8x=16 x=?

0.2x=16x=80

4×(0.8+X)=72 8X+2X=31.4 (X+1.8)÷4=2.5 3X+5X-4X=1.6 解方程

4×(0.8+x)=723.2+4x=724x=72-3.24x=68.8x=68.8÷4x=17.28x+2x=31.410x=31.4x=31.4÷10x=3.14(x+1.8)÷4=2.5(x+