Question

If x / (x + 5) = 4/5, then x = ?

Answer 1

Answer:

sorry I don't know this answer

Answer 2

Answer:

x = 20

Step-by-step explanation:

x / (x + 5) = 4/5

Cross multiplication i.e. multiply the denominator of the LHS [ x / (x + 5) ] with the numerator of RHS ( 4/5 ) and the denominator of the RHS ( 4/5 ) with the numerator of LHS [ x / (x + 5) ] .

4 ( x+5 ) = 5 (x)

4x + 20 = 5x

20 = 5x - 4x

20 = x

⇒ x = 20

         Hope it is helpful. Take care.