6. Вычисли. 3 * 9 + 43 9 * 8 - 32 (34 - 20) : 7 (21 - 15) * 5 90 - 9 * 6 42 + 7 * 4 13 - 4 * 2 (13 - 4) * 2

Решение: 1. $$3 \cdot 9 + 43 = 27 + 43 = 70$$ 2. $$9 \cdot 8 - 32 = 72 - 32 = 40$$ 3. $$(34 - 20) : 7 = 14 : 7 = 2$$ 4. $$(21 - 15) \cdot 5 = 6 \cdot 5 = 30$$ 5. $$90 - 9 \cdot 6 = 90 - 54 = 36$$ 6. $$42 + 7 \cdot 4 = 42 + 28 = 70$$ 7. $$13 - 4 \cdot 2 = 13 - 8 = 5$$ 8. $$(13 - 4) \cdot 2 = 9 \cdot 2 = 18$$ Ответы: 70 40 2 30 36 70 5 18