Question

x-4/1+9=10/9x 怎么算?还有：49x+51*(x-7)=81*100 (x-25)+(1-5%)(325-x

Answer 1

x-4/1+9=10/9x

0.1x=-8.75

x=-87.5

49x+51*(x-7)=81*100

49x+51x-357=8100

100x=8457

x=84.57

(x-25)+(1-5%)(325-x)=341

x+0.95(325-x)=366

x+308.75-0.95x=366

0.05x=57.25

x=1145

0.36x+11/10*0.36x+11/10*0.36x-16=x

(1+11/10+11/10)*0.36x-16=x

11/31*0.36x-x=16

11/11.16x-x=16

11/0.16x=16

x=1100