Question

find a number whose double is 45 greater than its half.

Answer 1

let the number be x

so according to the question

x/2+45=2x

x+90=4x

x=30


thanks

Answer 2

the answer is 2x=x/2+45
2x-x/2=45
(3x)/2=45
3x=90
x=90/3
the unknown number is 30