Question

find the value of x in 7[x-3]=21​

Answer 1

$\bf\mathtt\blue{AnsWEr:-}$

x-3= 21/7

x-3= 21/7or

x-3= 21/7orx-3=3

x-3= 21/7orx-3=3or

x-3= 21/7orx-3=3or x=6

$\bf\mathtt\purple{Or}$

7x-21=21

7x-21=21or

7x-21=21or7x=42

7x-21=21or7x=42or

7x-21=21or7x=42orx=6

Answer 2

Solution:

$7[x-3]=21$

$⟹7x-21=21$

$⟹7x=21+21$

$⟹7x=42$

$⟹x=6$

Thus, the value of x = 6