EcuacionesOnline version Ecuaciones by Raquel Perales 1 3x + 9 = 25 - 25 a 0 b 3 c -3 2 6x + 1 = 5x + 4 a 0 b 3 c -3 3 2x + 1 + 3 = 3x + x + 2 + 2 a 0 b 3 c -3 4 3 . x - 10 = - 1 a 0 b 3 c -3 5 2 . (8x - 28) = 8 - 16 a 0 b 3 c -3