Răspuns :
20x+4x-4=236
24x=236+4
24x=240
=> x=240/24=10
Sper ca te va ajuta. Succes!
24x=236+4
24x=240
=> x=240/24=10
Sper ca te va ajuta. Succes!
X×20+(X-1)×4 = 236 | :4
X×5+X-1 = 59
6×X= 59+1
6×X=60
X = 60:6
X = 10
Verificare:
10×20+(10-1)×4 = 200+9×4 = 200+36= 236
X×5+X-1 = 59
6×X= 59+1
6×X=60
X = 60:6
X = 10
Verificare:
10×20+(10-1)×4 = 200+9×4 = 200+36= 236