Question

cine le rezolva are coroană ​

Answer 1

[(80x - 2011)/5 + 84/4] * 7 = 175

[(80x - 2011)/5 + 84/4] * 7 = 175

[(80x - 2011)/5 + 21] * 7 = 175

[(80x - 2011)/5 + 21] * 7 = 175

[(80x - 2011)/5 + (5 * 21)/5] * 7 = 1

[(80x - 2011 + 5 * 21)/5] * 7 = 175

[(80x - 2011 + 105)/5] * 7 = 175

[(80x - 2011 + 105)/5] * 7 = 175

[(80x - 1906)/5] * 7 = 175

7 * (80x - 1906)/5 = 175

7 * (80x - 1906)/5 = 175 (7(80x - 1906))/5 = 175

(7(80x - 1906))/5 = 175

(560x - 13342)/5 = 175

(560x - 13342)/5 = 175 5 * (560x - 13342)/5 = 5 * 175

5 * (560x - 13342)/5 = 5 * 175

560x - 13342 = 5 * 175

560x - 13342 = 5 * 175

560x - 13342 = 875

560x - 13342 = 875

560x - 13342 + 13342 = 875 + 13342

560x = 14217

(560x)/560 = 14217/560

x = 2031/80

Cu plăcere l-am făcut doar pe primul că e mult de scris