SOLUTION: What is the number increased by one-half of itself is equal to 21? Find the number which when decreased by three-fourths of itself equals 28.
Algebra ->
Rational-functions
-> SOLUTION: What is the number increased by one-half of itself is equal to 21? Find the number which when decreased by three-fourths of itself equals 28.
Log On
Question 907344: What is the number increased by one-half of itself is equal to 21? Find the number which when decreased by three-fourths of itself equals 28. Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! n + n/2 = 21
2n + n = 42
3n = 42
n = 14
........
n - 3n/4 = 28
4n - 3n = 112
n = 112
And...checking
112 - (3/4)112 = 112 -84 = 28
