Answer:
15
15
Step-by-step explanation:
x + 20 = 35
- 20 -20
x = 15
5x - 14 = 16 + 3x
+ 14 +14
5x = 30 + 3x
-3x - 3x
2x = 30
x = 15
The formula to solve:

(10 being the percent)


Therefore it had a 180% decrease.
2 tens is 20 1 one is 1
so 21 times 10 is 210
Multiple 5x70 to get 350. Which makes the equation 350=5x and then you have to divide both sides by 5 to get x by itself. so 5x/5 and 350/5 makes x=70
Answer:
it could be any thing
Step-by-step explanation: