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Please teach me how to do this
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Please teach me how to do this

Please teach me how to do this-example-1
User Mahavir
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10 votes

Check the picture below.


\cfrac{18}{18+x}~~ = ~~\cfrac{19.2}{38.4}\implies \cfrac{18}{18+x}~~ = ~~\cfrac{19.2}{2(19.2)}\implies \cfrac{18}{18+x}~~ = ~~\cfrac{1}{2} \\\\\\ 36=18+x\implies 18=x

Please teach me how to do this-example-1
User Riina
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