Question

5/8 x=40 the x does not mean multiply it is a letter.

Answer 1

X is equal to 64 
40 divided by 5/8 is 64

Answer 2

Multiply the sentence by 8/5
→ (5/8) * x * (8/5) = 40 * (8/5)

Then simplify it
→ x = 64

So the answer is x = 64