Question 18600
Try this:
{{{(-2/3)(2/3 - (1/2)(3/4 - 1/2))}}} Start with the inner-most parentheses.
{{{(-2/3)(2/3 - (1/2)(3/4 - 2/4)))}}} Subtract: {{{3/4-2/4 = 1/4}}}
{{{(-2/3)(2/3 - (1/2)(1/4))}}} Multiply: {{{(1/2)(1/4) = 1/8}}}
{{{(-2/3)(2/3 - 1/8)}}} Subtract: {{{2/3 - 1/8 = 16/24 - 3/24}}} = {{{13/24}}}
{{{(-2/3)(13/24)}}} Finally, perform the indicated multiplication:
{{{-26/72}}} Simplify.
{{{-13/36}}} ...and there you have it!