Question

If 4/5 x blank = 2/5, what is blank

Answer 1

1/2

Explanation:

Better write, "If (4/5)x = 2/5, what is x? Please do not use 'x' to denote multiplication; use " * " instead.

If (4/5)x = 2/5, multiplying both sides by (5/4) will isolate x:

(5/4)(4/5)x = (5/4)(2/5), or

x = 10/20, or x = 1/2. The unknown number is 1/2.

Answer 2

So we know nothing about blank so we can infer that’s our X in this case

So 4/5x=2/5 do inverse multiplication for 4/5 to get rid of it from the left side so you’re left with

X=5/4*2/5 just multiply across and you get 10/20 now simplify

1/2