(5x-36)/(4x+36)=0.5 十万火急!_数学解答

(5x-36)/(4x+36)=0.5 十万火急!

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解答

(5x-36)/(4x+36)=0.5
(5x-36)/(4x+36)=1/2
2(5x-36)=4x+36
10x-72=4x+36
10x-4x=72+36
6x=108
x=18