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帮我解几道分式方程(1)150/(X+3)=3/4*150/(X-3)(2)270/X=207/2.5X+4.5(3)48/X=45/(X-5%)
题目详情
帮我解几道分式方程
(1)150/(X+3)=3/4*150/(X-3)
(2)270/X=207/2.5X+4.5
(3)48/X=45/(X-5%)
(1)150/(X+3)=3/4*150/(X-3)
(2)270/X=207/2.5X+4.5
(3)48/X=45/(X-5%)
▼优质解答
答案和解析
(1)(150/(x+3))/(150/(x-3))=3/4
(150/(x+3))*((x-3)/150)=3/4
(x-3)/(x+3)=3/4
4(x-3)=3(x+3)
4x-12=3x+9
x=21
(2)270/X-207/2.5x=4.5
( ( 207*2.5x)-207x)/2.5x^2=4.5
468x/2.5x^2=4.5
468/2.5x=4.5
2.5x=104
x=41.6
(3)48x-48*0.05=45x
3x=2.4
x=0.8
(150/(x+3))*((x-3)/150)=3/4
(x-3)/(x+3)=3/4
4(x-3)=3(x+3)
4x-12=3x+9
x=21
(2)270/X-207/2.5x=4.5
( ( 207*2.5x)-207x)/2.5x^2=4.5
468x/2.5x^2=4.5
468/2.5x=4.5
2.5x=104
x=41.6
(3)48x-48*0.05=45x
3x=2.4
x=0.8
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