Question 61498
{{{x/4+(3x)/5 = 17}}}.
Since 20 is the least common multiple of the denominators, 4 and 5, multiply everything by 20: {{{20(x/4)+20(3x)/5 = 20(17)}}}.
{{{5x+12x=340}}}.
{{{17x=340}}}. So, {{{x=20}}}.

Verify by plugging x=20 into original equation:

{{{20/4+(3*20)/5 = 5+12 = 17}}}.