作业帮(0.4x-2.1)/0.5=(0.1+0.2x)/0.03-0.6
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(0.4x-2.1)/0.5=(0.1+0.2x)/0.03-0.6
(0.4x-2.1)/0.5=(0.1+0.2x)/0.03-0.6
(0.4x-2.1)/0.5=(0.1+0.2x)/0.03-0.6
(0.4x-2.1)/0.5=(0.1+0.2x)/0.03-0.6
(4x-21)/5=(10+20x)/3-0.6
3(4x-21)=5(10+20x)-9
12x-63=50+100x-9
12x-100x=41+63
-88x=104
-22x=26
x=-13/11
(4x-21)/5=(10+20x)/3-3/5
3(4x-21)=5(10+20x)-9
12x-63=50+100x-9
-88x=104
x=-13/11
(4x-21)/5=(10+20x)/3-3/5
3(4x-21)=5(10+20x)-9
12x-63=50+100x-9
-88x=104
x=-13/11