Question

1. Amina thinks of a number and subtracts5/2
from it. She multiplies the result by 8.
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Answer 1

Let the number she thought be x

(x/1 - 5/2) 8 = 3x

(2x-5/2)8/1=3x

16x-40/2=3x

16x-40=6x

16x-6x=40

10x=40

x=40/10

x=4

Answer 2

Answer:

let the number be x

according to question

X - 5/2 =0

(2x - 5)/2 * 8 =0

4x - 20 =0

X = 5