0.2(x减2)减(0.4x减1)等于0.3(x减1)求解答

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0.2(x减2)减(0.4x减1)等于0.3(x减1)求解答0.2(x减2)减(0.4x减1)等于0.3(x减1)求解答0.2(x减2)减(0.4x减1)等于0.3(x减1)求解答0.2(x-2)-(

0.2(x减2)减(0.4x减1)等于0.3(x减1)求解答
0.2(x减2)减(0.4x减1)等于0.3(x减1)求解答

0.2(x减2)减(0.4x减1)等于0.3(x减1)求解答
0.2(x-2)-(0.4x-1)=0.3(x-1)
2(x-2)-(4x-10)=3(x-1)
2x-4-4x+10=3x-3
2x-4x-3x=-3+4-10
-5x=-9
x=1.8

0.2x-0.4-0.4x+1=0.3x-0.3
-0.5x=-0.9
x=9/5