A number is increased by 21 is equal to half of the number increased by 18.5 what is the number

Question

asked Nov 5, 2018 78.5k views

1 Answer

Mohammad Hossein · Answer 1 · 2018-11-09T02:34:09+0000

x + 21 = (x + 18.5) × 2
x + 21 = 2x + 37
-37 -37
_____________
x - 16 = 2x
-x -x
-16 = x

-16 + 21 = 5
-16 + 18.5 = 2.5

The number is -16.