Question

if 5x/3-4=2x/5 then the numerical value of 2x-8is

Answer 1

Given,

⇒ ( 5x / 3 ) - 4 = 2x/5

⇒ ( 5x/3 ) - ( 2x/5 ) = 4

      25x - 6x
⇒ ------------------- = 4
           15

⇒ 19x/15 = 4

⇒ 19x = 4 × 15

⇒ 19x = 60

∴ x = 60/19.

Now,

= 2x - 8

= 2 ( 60/19 ) - 8

= ( 120/19 ) - 8

  120 - 152
= ----------------
         19

= -32/19.