Question

if 45 is added to a half a number the result is triple the number find the number

Answer 1

let the number be x,

45+x/2 = 3x
90/2+x/2=3x
90+x= 2×3x
90+x=6x
5x=90
x=18

therefore, the number is 18



HOPE it helps! :-)

Answer 2

Let the number be 'x'
So, 1/2x + 45=3x
​so,45=3x-1/2x
​     45=6/2x - 1/2x
     45=5/2x=2.5x
     x=45 divided by 2.5
       =18
Therefore, x= 18
Hope this helps