Question

x+1/2 - x-1/4 = 7/4
resolva a equação do 1 grau ..

Answer 1

Multiplica tudo por 4.
$\frac{x+1}{2} - \frac{x-1}{4} = \frac{7}{4} \\\\ 2x + 2 - x + 1 = 7\\\\ x + 3 = 7\\\\ \boxed{x = 4}$

Answer 2

$\frac{x+1}{2}-x-\frac{1}{4}=\frac{7}{4}\\ \\ multiplique \ tudo \ por \ 4:\\ \\ 2x+2-4x-1=7\\ \\ -2x=7-2+1\\ \\ -2x=4\\ \\ \boxed{x=-2}$