0.3x+(1000-x)(-0.5)=260怎么解?

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0.3x+(1000-x)(-0.5)=260怎么解?

0.3x+(1000-x)(-0.5)=260怎么解?
0.3x+(1000-x)(-0.5)=260怎么解?

0.3x+(1000-x)(-0.5)=260怎么解?
0.3x+(1000-x)(-0.5)=260
0.3X -500 +0.5X=260
0.8X=760
X=760/0.8
X=950