Question 648581
{{{(8/9)(8/9)(-81) + (5/7)/(-15/14)}}}
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{{{(8/cross(9))(8/cross(9))(-cross(81)) + (cross(5)/cross(7))(2cross(14)/-3cross(15))}}}
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{{{-64 - 2/3 = -64(3/3) - 2/3 = -192/3 - 2/3 = -194/3}}} = 64 {{{2/3}}}
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