0.3×五分之四-6x=0.2 加油啊

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0.3×五分之四-6x=0.2加油啊0.3×五分之四-6x=0.2加油啊0.3×五分之四-6x=0.2加油啊0.3×4/5-6x=0.20.3×0.8-6x=0.20.24-6x=0.26x=0.04

0.3×五分之四-6x=0.2 加油啊
0.3×五分之四-6x=0.2
加油啊

0.3×五分之四-6x=0.2 加油啊
0.3×4/5-6x=0.2
0.3×0.8-6x=0.2
0.24-6x=0.2
6x=0.04
x=1/150

0.3×五分之四-6x=0.2
0.24-6x=0.2
6x=0.24-0.2
6x=0.04
x=0.04/6
x=1/150

0.3×五分之四-6x=0.2
=>0.3×4/5-6x=0.2
=>0.24-6x=0.2
=>6x=0.24-0.2
=>6x=0.04=1/25
=>x=1/150

0.24-6x=0.2
6x=0.24-0.2
6x=0.04
x=0.04/6
x=1/150