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1.5x%x=5+5怎么解方程

(1) 1 3 (X+1.5)=12.5, 1 3 (X+1.5)÷ 1 3 =12.5÷ 1 3 , X+1.5=37.5, X+1.5-1.5=37.5-1.5, X=36;(2)x-28%x=21.6, 0.72x=21.6,0.72x÷0.72=21.6÷0.72, x=30;(3) 3 4 X- 5 8 X= 3 4 , 1 8 X= 3 4 , 1 8 X÷ 1 8 = 3 4 ÷ 1 8 ,...

2/5x=1/3y+5 (丽丽剩下2/5 家家剩下1/3) 解2元一次方程得x=50 y=...112%x+110%(3600-x)=4000 1.12x+3960-1.1x=4000 0.02x=40 x=2000 答...

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