Question 1758
{{{ (12x + 4)/(2x + 7) = 4}}}

Just cross multiply it :
12x + 4 = 4(2x + 7)

So :
12x + 4 = 8x + 28

Shifting :
12x - 8x = 28 - 4

4x = 24 

{{{x=24/4}}}

x=6