Question 832223
{{{ x/2 + x/5 = 7/10 }}}
Multiply both sides by {{{ 10 }}}
{{{ 5x + 2x  = 7 }}}
{{{ 7x = 7 }}}
{{{ x = 1 }}}
check:
{{{ 1/2 + 1/5 = 7/10 }}}
{{{ .5 + .2 = .7 }}}
{{{ .7 = .7 }}}
OK