Toán A= 12/13+154/143- (21/23+275/253) * x/y là P/s #miicutehonphmaique 16/07/2021 By Eden A= 12/13+154/143- (21/23+275/253) * x/y là P/s #miicutehonphmaique
`A = 12/13 + 154/143 – ( 21/23 + 275/253 )` `A = 132/143 + 154/143 – ( 231/253 + 275/253 )` `A = 286/143 – 506/253` `A = 2 – 2` `A = 0` `#dtkc` Trả lời
`A= 12/13 + 154/143- ( 21/23 + 275/253 )` `= 12/13 + 14/13 – 21/23 – 275/253` `= (12+14)/13 – 21/23 – 25/23` `= 26/13 – (21+25)/23` `= 2 – 46/23 = 2 – 2 = 0` Vậy `A = 0 ` Trả lời