(0.4x+0.9)/0.5-(0.03+0.02x)/0.03=(x-5)/2 x等于多少?

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(0.4x+0.9)/0.5-(0.03+0.02x)/0.03=(x-5)/2 x等于多少?
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(0.4x+0.9)/0.5-(0.03+0.02x)/0.03=(x-5)/2 x等于多少?
(0.4x+0.9)/0.5-(0.03+0.02x)/0.03=(x-5)/2 x等于多少?

(0.4x+0.9)/0.5-(0.03+0.02x)/0.03=(x-5)/2 x等于多少?
(0.4x+0.9)/0.5-(0.03+0.02x)/0.03=(x-5)/2
(0.4x+0.9)/0.5-(x-5)/2-(0.03+0.02x)/0.03=0
4x/5+9/5-x/2+5/2-1-2x/3=0
即x=9

x=9

x=9没错！
(0.4x+0.9)/0.5-(0.03+0.02x)/0.03=(x-5)/2
(0.4x+0.9)/0.5-(x-5)/2-(0.03+0.02x)/0.03=0
4x/5+9/5-x/2+5/2-1-2x/3=0
这是简写！