Question

subtract one by two from a number and multiply the result by 1 by 2 you get 1 by 8 what is the number

Answer 1

[x - 1/2] × 1/2 = 1/8
[x - 1/2] = 1/8 ÷ 1/2
x - 1/2 = 1/8 × 2
x - 1/2 = 1/4 x = 1/4 + 1/2
x = 1 + 2/4
x = 3/4