Question

How did the answer come as 4? pls explain with method

Answer 1

Answer:

the number is 4

Step-by-step explanation:

let the number be x then

x-5/2 = 2x/2 -5/2

multiplying the given by 8 we get

8x - 20

also 8x- 20 = 3x

20 = 5x

x = 4

hope you understand

Answer 2

Step-by-step explanation:

let the number be X

subtract 5/2 from it= X - 5/2

multiplied by 8 = ( X -5/2 )×8= 3× X

8 X -20 = 3 X

8 X - 3 X = 20

5 X = 20

X = 20/5

X = 4

so number thought by amina is X = 4