Question 89893
{{{ (x/3 + 3/4)*(3x/4 - 3/5) }}}


{{{ (x/3)(3x/4) -  (x/3)(3/5) + (3/4)(3x/4) - (3/4)(3/5) }}} Foil


{{{ 3x^2/12 -  3x/15 + 9x/16 - 9/20 }}} Multiply


{{{ x^2/4 -  x/5 + 9x/16 - 9/20 }}} Reduce


{{{ x^2/4 -  16x/80 + 45x/80 - 9/20 }}} Convert to equivalent fraction


{{{ x^2/4 + 29x/80 - 9/20 }}} Combine like terms

Since you don't have an equal sign, this is not an equation. So you cannot solve for x. So you can only simplify the expression.