Answer:
n=7
Step-by-step explanation:
difference means subtraction so:
8n - 21= 35
8n=35+21
8n= 56
n= 56÷8
n=7
The number is 1
Step-by-step explanation:
Let x be the required number
Then according to given statement
Five times the difference of twice a number and seven is negative twenty-five.

Simplifying

Adding 35 on both sides

Dividing both sides by 10

Verification:
![5[2(1)-7] = -25\\5(2-7) = -25\\5(-5) = -25\\-25=-25](https://tex.z-dn.net/?f=5%5B2%281%29-7%5D%20%3D%20-25%5C%5C5%282-7%29%20%3D%20-25%5C%5C5%28-5%29%20%3D%20-25%5C%5C-25%3D-25)
Hence,
1 is the number
Keywords: Linear equation
Learn more about linear equation at:
#LearnwithBrainly
Look at my picture for the work
Answer: a=8 and b=2
Please let me know if this helped!!
Answer:
4.5 feet = 1.5 yards
Step-by-step explanation:
1 yard equals 3 feet
Then:
1 ----- 3
x -----4.5

Hope this helps