4. Решите примеры: 6+4+3= 8+2+7= 7+3+5= 9+1+8= 15-5-6= 14-4-7= 18-8-2= 13-3-5=

Решение: 1. $$6 + 4 + 3 = 13$$ 2. $$8 + 2 + 7 = 17$$ 3. $$7 + 3 + 5 = 15$$ 4. $$9 + 1 + 8 = 18$$ 5. $$15 - 5 - 6 = 4$$ 6. $$14 - 4 - 7 = 3$$ 7. $$18 - 8 - 2 = 8$$ 8. $$13 - 3 - 5 = 5$$