Question

if 10x=03-0.2, find the value of x

Answer 1

10x = 3 - 0.2 = 2.8
x = 0.28

i think your question is 10x = 0.3 - 0.2 in that case
10x = 0.1
x = 0.01

Answer 2

$\huge\underline{\pink{\bf Answer :-}}$

$\implies$10x = 3 - 0.2

$\implies$10x = 2.8

$\implies$x = (2.8)/10

$\implies$x = 0.28

Hope it helps :)