Răspuns :
x-3/5=36km
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3/5+36=?km 3/5 ) |___|___|___|
2/5 ) |___|___|=36km
2/5=36:km
3/5=(36:2)*3
3/5=18*3
3/5=54 km
54+36=90 km are drumul
----------------
3/5+36=?km 3/5 ) |___|___|___|
2/5 ) |___|___|=36km
2/5=36:km
3/5=(36:2)*3
3/5=18*3
3/5=54 km
54+36=90 km are drumul