Question

find the value of the following expression for a=3 8-5a

Answer 1

Hlo friend.. Cutiepie Here..

Here is ur answer :

$8 - 5a$


Given a = 3


$8 - 5(3)$


$8 - 15$


$- 7$

HOPE IT HELPS YOU...

REGARDS
@sunita

Answer 2

ANSWER WITH FULL EXPLANATION

We are given a value : $a=3$ , and we have to substitute this given value into a given expression. 

Here's your answer: 
$8-5a$
$=8-5*3$    [Substituting $a=3$ into the given expression. ]
$=8-15$
$=-7$

Congrats ! We have found the answer. 

Hope this may help you. 

If you have any doubt, then you can ask me in the comments.