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5X(x-6.5)=1·7

= 5X-32.5=1.7 = 5X=1.7+32.5 = 5X=34.2 = X=6.84

x-6.5=0.34 x=0.34+6.5 x=6.84

65呀 =35-(-30) =65 祝你生活愉快,学习顺利,望采纳,谢谢!

正确 (一5)X(一7)一5X(一6) =35一(一30) =35十30 =65

解:5x-32.5=17.5 5x=17.5+32.5 5x=50 x=10

7.5x-x =6.5 (7.5-1)x=6.5 6.5x=6.5 x=6.5÷6.5 x=1

5.5x=1.1 解得 x=0.2

5x ÷ 6 = 1.7 5x = 1.7 × 6 5x = 10.2 x = 2.04 ------------- 望采纳,谢谢

5/6[6/5(2/3x-1)-2]=x-8 5/8*6/5*(2/3x-1)-5/3=x-8 2/3x-8/3=x-8 1/3x=16/3 x=16 1-1/5(x- 10-2x/3)=x/2-1/3(3x- 3-6x/2) 1-x/5-2-2x/15=x/2-x+1+x -1-x/3=-x/2+1 x/2-x/3=2 x/6=2 x=12.

5x+4/6>=7/8-1-x/3 16/3x>=10/48 x>=5/128 当x取值大于等于5/128时,代数式5x+4/6的值不小于7/8-1-x/3。

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