Answer: A = 38
Steps:
5A = 200 - 10
5A = 190
A = 190/5
A = 38
I hope this helps :)
Answer:
X = 
Step-by-step explanation:
2 (4-8x) + 6 = 1
Multiply parentheses by 2
8 - 16x + 6 = 1
add (8 + 6)
14 - 16x = 1
Move constant to right and change its sign
-16x = 1 -14
Calcualte te difference
-16x = -13
divide bot sides by -16
x = 
Easy, 100 x 3 is 300 pounds, 5 x 3 is 15, so 15 pounds. :)