Question

x+20+(444-x)*95%-444=7怎么解？

Answer 1

解方程
x+20+(444-x)*95%-444=7
x+20+444*0.95-0.95x-444=7
x-0.95x+20+421.8-444=7
0.05x-2.2=7
0.05x=7+2.2
0.05x=9.2
x=9.2/0.05
x=184

Answer 2

去括号然后合并同类项

x+20+444x95%-xX95%-444=7
(1-95%)x+444x(95%-1)=7
0.5x-444x0.5=7
0.5x=7+222
0.5x=229
x=229/0.5
=458

Answer 3

x+20+(444-x)*95/100-444=7
(444-x)*95/100-(444-x)+20=7
(444-x)*(95/100-1)+20=7
(444-x)*(-5/100)=-13
444-x=(-13)*(-20)
444-x=260
x=444-260
x=184

Answer 4

✘+20+(444-✘)*95%-444=7
✘+20+444*95%-95%✘-444=7
✘+20+444*(95%-1)-95%✘=7
✘+ 20- 444*0.05-95%✘=7
0.05✘=2.2+7
0.05✘=9.2
✘=9.2/0.05=184

Answer 5

x+20+(444-x)*95%-444=7
x+20+444x0.95-0.95x-444=7
0.05x-2.2=7
0.05x=9.2
x=184