✨ Best Answer ✨
x/80+7+(2000-x)/100=30 両辺に800かけると
10x+5600+8(2000-x)=24000
2x+21600=24000
2x=2400
x=1200
となります
✨ Best Answer ✨
x/80+7+(2000-x)/100=30 両辺に800かけると
10x+5600+8(2000-x)=24000
2x+21600=24000
2x=2400
x=1200
となります
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