Question 674244
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Hi,
{{{(6x-7)/4+(3x-5)/7=(5x+78)/28}}} |Multiplying thru by 28 so as all denominators = 1
  7(6x-7) + 4(3x-5) = 5x + 78 
  42x - 49 + 12x - 20 = 5x + 78    ||Combining Like Terms
      49x = 147
        x = 3
and
{{{11/4 + 4/7 = 77/28 + 16/28  = 93/28}}}