Question

O carte si un album costa 147 lei,albumul si un stilou costa 178 lei,iar cartea si stiloul costa 75 lei. Cati lei costa fiecare? Coronitaa+Multuuu♥♥

Answer 1

c+a=147
a+s=178
c+s=75
-------------------------- adunam
2a+2c+2s=147+178+75=400  impartim la 2
a+c+s=200
a=200-(c+s)=200-75=125
c=200-(a+s)=200-178=22
s=200-(a+c)=200-147=53