Answer:
Reflexive Property
Step-by-step explanation:
6.7
Answer:the first one
Step-by-step explanation: rise over run
Answer: x = 12
1. add 5x + 1x which will equal 6x so now your equation is: 6x + 6 = 78
2. subtract 6 from 78 to get 72: 6x = 72
3. divide 72 by 6x to get your answer 12