Question

(0.5x+2)/0.03-x=0.3(0.5x+2)/0.2-10又12分之11

Answer 1

(0.5x+2)/0.03-x=0.3(0.5x+2)/0.2-(10+11/12)
100*(0.5x+2)/100*0.03-x=10*0.3(0.5x+2)/10*0.2-(10+11/12)
100*(0.5x+2)/3-x=3(0.5x+2)/2-(10+11/12)
(50x+200)/3-x=3*1/2(x+4)/2-(10+11/12)
(50x+200)/3-x=3(x+4)/4-(10+11/12)
12*(50x+200)/3-12*x=12*3(x+4)/4-12*(10+11/12)
4*(50x+200)-12x=9(x+4)-120-11
200x+800-12x=9x+36-131
188x+800=9x-95
188x-9x=-95-800
179x=-895
x=-5

Answer 2

解：
0.5x+2/0.03-x=0.3(0.5x+2)/0.2-10又12分之11
两边同时乘以6得
3x+400-6x=9(0.5x+2)-60又12分之66
3x+400-6x=4.5x+18-60又12分之66
3x-6x-4.5x=18-400-60又12分之66
-7.5x=-382-60又12分之66
-7.5x=-382-65.5
-7.5x=-447.5

x=59又3分之2

追问

不对