Question 672714
Always work from the inside out
{{{ 3*( ( 4*(x-1) + 5 ) - ( 2*( 2x-1 ) + 5 )) }}}
One check that you can do is just count the
number of ( 's and the number of ) 's -they
should be the same. In this problem, they 
both are 5.
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first step:
{{{ 3*( ( 4x - 4 + 5 ) - ( 4x - 2 + 5 )) }}}
Now simplify:
{{{ 3*(( 4x + 1 ) - ( 4x + 3 )) }}}
The {{{ 4x + 1 }}} doesn't really need to be in
parentheses at this point, also, do the
subtraction using distributive law.
{{{ 3*( 4x + 1 - 4x - 3 ) }}}
{{{ 3*( -2 ) }}}
{{{ -6 }}}
Note that it doesn't matter what {{{ x }}} is,
the result is still {{{ -6 }}}