3/4=x
5/7=x+10
3/4=21/28
5/7=20/28
cada 1/28 = 10 dolares
10.28=280$
gasto 280$
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3/4=x
5/7=x+10
3/4=21/28
5/7=20/28
cada 1/28 = 10 dolares
10.28=280$
gasto 280$
3/4 × 2P/7 - 19 = 5/7 × P/4
= 6P/28 - 10 = 5P/28
= 6P - 280 = 5P
= P = 280
Inicialmente tuvo $280
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Espero te haya servido