Question 1091069
When doing addition,  -(-) = +
{{{ (-13/9) -(-9/14 ) }}}
You don't need the parentheses around {{{ -13/9 }}} right now
{{{ -13/9 + 9/14 }}}
The LCD of the fractions is {{{ 9*14 = 126 }}}
{{{ ( -13/9 )*( 126/126 ) + ( 9/14 )*( 126/126 ) }}}
{{{ (( -13)*14 )/126 + ( 9*9 ) / 126 }}}
{{{ ( -182 )/126 + 81/126 }}}
{{{ -101/126 }}}
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