(0.5X-3)/0.04-x=[0.4(0.5x-3)]/0.5 (0.5X-3)/(1/25)-x=[0.4(0.5x-3)]/(1/2)25(0.5X-3)-x=2[0.4(0.5x-3)]12.5X-75-x=0.8(0.5x-3)125X-750-10x=8(0.5x-3)115X-750=4x-24111X=726x=726/111
(0.5X-3)/0.04-x=[0.4(0.5x-3)]/0.5
2个回答
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