Question

if 0.2x - 3.5 = x + 0.5 then find the value of x​

Answer 1

$0.2x - 3.5 = x + 0.5 \\ 0.2x - x = 0.5 + 3.5 \\ 0.8x = 4 \\ x = \frac{4}{0.8} \\ x = 5$

$<marquee behaviour-move><font color="redpink"><h1></strong><strong>x</strong><strong>=</strong><strong>5</strong><strong></h1></ marquee>$.

Answer 2

Step-by-step explanation:

Converting decimals into fractions,

$\sf \dfrac{2}{10}x - \dfrac{35}{10} = x + \dfrac{5}{10}$

Transposing x to L.H.S. and $\sf \dfrac{35}{10}$ to R.H.S.

$\sf \implies \dfrac{2}{10}x - x = \dfrac{35}{10} + \dfrac{5}{10}$

$\sf \implies \dfrac{2-10}{10}x = \dfrac{35+5}{10}$

$\sf \implies \dfrac{-8}{10}x = \dfrac{40}{10}$

$\sf \implies -8x = 40$

$\sf \implies -x = 5$

$\sf \implies x=-5$