2(0.3+4)-5(0.2x-7)=9
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2(0.3+4)-5(0.2x-7)=92(0.3+4)-5(0.2x-7)=92(0.3+4)-5(0.2x-7)=92(0.3+4)-5(0.2x-7)=98.6-x+35=9x=34.634.6
2(0.3+4)-5(0.2x-7)=9
2(0.3+4)-5(0.2x-7)=9
2(0.3+4)-5(0.2x-7)=9
2(0.3+4)-5(0.2x-7)=9
8.6-x+35=9
x=34.6
34.6
X=28.4
2*4.3-x+35=9
8.6-x+35-9=0
34.6-x=0
x=34.6
24.8是错的
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