54x10 +[(780:4+76x10):5+343]:6-200x3=

Răspuns :

.......................
...
Vezi imaginea CARTURESTI
540+[(195+760):5+343]:6-600= 540+(955:6+343):6-600= 540+(191+343):6-600=540+534:6-600= 540+89-600=629-600=29