Answer:
12x
Step-by-step explanation:
You can add the like terms (which have x)
5x+7x=12x

so as you can see the common ratio is 2, and the first term is 1/2,

Answer:
18/40
Step-by-step explanation:
1. Find a common denominator
8, 16, 24, 32, 40
5, 10, 15, 20, 25, 30, 35, 40
2/8 times 5= 10/40
1/5 times 8= 8/40
10/40 plus 8/40= 18/40
Answer:
22.44
Step-by-step explanation:
If it’s the midpoint, just multiply it by 2 giving you full length