Question 6147
Your answer doesn't check, so there must be a problem!
Resolve, being very careful.
{{{ 0.7x - (6 - 0.5x) = 0.48 }}}
{{{ 0.7x - 6 + 0.5x = 0.48 }}}  [multiply each term in the group by -1]
{{{ 1.2x - 6 = 0.48 }}} [simplify]
{{{ 1.2x = 6.48 }}} [adding 6 to both sides]
{{{ x = 5.4 }}}