Răspunsuri

Cel mai inteligent răspuns!
2014-11-10T16:27:05+02:00
A) 2x - 3 + 6x - 10 + 13 - 7x = 8x - 7x - 13 + 13 = x
b) 12 - 4x² - 3 - x² = - 5x² + 9
c) 18 - 7x + 5 + 23x - 21 = 16x + 2 = 2(8x + 1)
d) - 5 + a - 2x - 6x - 20 + 5a = 6a - 8x - 25
3 5 3