✨ Best Answer ✨
両辺に1200をかけて
400(x-2600)=300(x+1200)
4(x-2600)=3(x+1200)
4x-10400=3x+3600
x=14000
✨ Best Answer ✨
両辺に1200をかけて
400(x-2600)=300(x+1200)
4(x-2600)=3(x+1200)
4x-10400=3x+3600
x=14000
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訂正
✖
両辺に1200をかけて
400(x-2600)=300(x+1200)
○
両辺に1200をかけて
4(x-2600)=3(x+1200)