Question

(2/3 + 3/4) . (5/4 - 3/7)

3/2X + 3/4 = 4/2X + 1/4

Answer 1

Explicación paso a paso:

• $( \frac{2}{3} + \frac{3}{4} ) . ( \frac{5}{4} - \frac{3}{7} )$                       * $\frac{2}{3} + \frac{3}{4} = \frac{8+ 9}{12} = \frac{17}{12}$      

= $\frac{17}{12} ( \frac{23}{28} )$                                   *$\frac{5}{4} - \frac{3}{7} = \frac{35-12}{12} =\frac{23}{12}$

= $\frac{391}{144}$

• $\frac{3x}{2} + \frac{3}{4} = \frac{4}{2} + \frac{1}{4}$

$= 4 ( \frac{2x}{4} + \frac{1}{4}= 4 (\frac{3x}{2} + 4 ( \frac{3}{4}) \\= 2 (3x) +3 = 2x +1 \\=6x +3 = 2x +1\\= 6x- 2x = 1- 3\\= 4x = -2\\= x = \frac{-2}{4} \\ x = \frac{-1}{2}$

Espero te sirva :)