Question

a number added to its half is 12

Answer 1

let the no. =X
hence,x+X/2=12
3x/2=12
X=12×2/3
X=8

Answer 2

Let that number be x.

x is added to its half.

The half of x is x*1/2 =x/2

x added to x/2 gives 12.

x+x/2=12

Multiplying both sides by 2.

2(x+x/2)=24

=2x+x=24

=3x=24

Dividing both sides by 3.

3x/3=24/3

=x=8

The number is 8.

Lets verify:-

8 is added to 8/2

=8+8/2

=8+4=12

Thats correct.

The number is 8.

Hope it helps.

Thanks