✨ Best Answer ✨
3(x-3y)-5(x-3y)=3x-9y-5x+15y
=-2x+6y
ここで、x=1/2 y=2/3 を代入
3(x-3y)-5(x-3y)=-1+4=3
✨ Best Answer ✨
3(x-3y)-5(x-3y)=3x-9y-5x+15y
=-2x+6y
ここで、x=1/2 y=2/3 を代入
3(x-3y)-5(x-3y)=-1+4=3
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