Question

Un om a cheltuit 2/3 din banii sai si i-au mai ramas 700 lei. Cati bani a avut si cati bani a cheltuit?
Cu ecuatii!
Va rog frumos urgent!

Answer 1

3/3= suma de bani
3/3-2/3=1/3 (suma ramasa)
1/3=700 (suma ramasa)
700x3=2100 (toata suma)

Answer 2

x suma de bani
2x/3+700=x
2x+700x3=3ori x
2x+2100=3x
2x-3x=-2100
-x=-2100 
x=2100 (suma de bani)

2100x 2/3=1400 lei (a cheltuit)
2100-1400=700 lei (i-au ramas)