(7x-30)/(3x+30)=3/2如何解?
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(7x-30)/(3x+30)=3/2如何解?(7x-30)/(3x+30)=3/2如何解?(7x-30)/(3x+30)=3/2如何解?两内项之积等于两外项之积得出2(7x-30)=3(3x+30)
(7x-30)/(3x+30)=3/2如何解?
(7x-30)/(3x+30)=3/2如何解?
(7x-30)/(3x+30)=3/2如何解?
两内项之积等于两外项之积 得出2(7x-30)=3(3x+30) 解之得出x=30,代入检验,x=30是原方程的解
x-2/3x+x+2/7x=30
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