200×5+200×2÷5×(x+15-5)=200x
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![200×5+200×2÷5×(x+15-5)=200x](/uploads/image/z/1588462-70-2.jpg?t=200%C3%975%2B200%C3%972%C3%B75%C3%97%EF%BC%88x%2B15-5%EF%BC%89%3D200x)
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200×5+200×2÷5×(x+15-5)=200x
200×5+200×2÷5×(x+15-5)=200x
200×5+200×2÷5×(x+15-5)=200x
1000+80*(X+10)=200X1000+80X+800=200X200X-80X=1800120X=1800X=15