Answer:
2(x+10)
Step-by-step explanation:
5x+5x
5+5+x+x
10 2x
(10)+(2x)
10 + x, (5+5)x
These are all I can think of off the top of my head
18
The answer is B, hope this helps
No, 7a does not equal 56. If a = 7, then 7a would equal 7 * 7. And, 7 * 7 = 49.