Răspuns :

Explicație pas cu pas:

F:7+25=900-(300-48×5)×9

F:7+25=900-(300-240)×9

F:7+25=900-60×9

F:7+25=900-540

F:7+25=360

F:7=360-25

F:7=335

F=335×7

F=2.345

Explicație pas cu pas:

f:7+25=900-(300-48×5)×9

f:7+25=900-(300-240)×9

f:7+25=900-60×9

f:7+25=900-540

f:7+25=360

f:7=360-25

f:7=335

f=335×7

f=2 345