【x-0.5】÷【¾-x】=1解方程
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【x-0.5】÷【¾-x】=1解方程
解 : (x - 0.5)÷ (3/4 - x) = 1
x - 0.5 = 3/4 - x
x + x = 3/4 + 0.5
2x = 5/4
x = 5/8
据题设→x-1/2=3/4-x→x=(5/4)/2=5/8。
(X-0.5)÷(3/4-X)=1
X-0.5=3/4-X=0.75-X
2X=0.75+0.5=1.25
X=0.625
回答完毕保证正确
【x-0.5】÷【¾-x】=1
x-0.5=3/4-x
2x=3/4+0.5=3/4+2/4=5/4
x=5/8
X-0.5=3/4-X
2X=5/4
X=5/8
用换元法,设2x-1=A,y+2=B,原方程可化为4A-15B=20,3A+15B=5,解得A=25/7,B=-8/21,再求得x=16/7,y=-50/21
【x-0.5】÷【¾-x】=1
x-0.5=0.75-x
2x=1.25
x=0.625
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