6. 9+6-8 7+5-6 32-(24+6) 49-(33+6) 28+37+2+3 64+18+2+6

Решение: Выполним вычисления: $$9 + 6 - 8 = 15 - 8 = 7$$ $$7 + 5 - 6 = 12 - 6 = 6$$ $$32 - (24 + 6) = 32 - 30 = 2$$ $$49 - (33 + 6) = 49 - 39 = 10$$ $$28 + 37 + 2 + 3 = 65 + 5 = 70$$ $$64 + 18 + 2 + 6 = 82 + 8 = 90$$ Ответ: $$9 + 6 - 8 = 7$$ $$7 + 5 - 6 = 6$$ $$32 - (24 + 6) = 2$$ $$49 - (33 + 6) = 10$$ $$28 + 37 + 2 + 3 = 70$$ $$64 + 18 + 2 + 6 = 90$$