Question

2)calcule as equações abaixo :
b)me ajudem pfvvvv !!!

Answer 1

$9x - 36 = 0 \\ \\ 9x = 36 \\ \\ x = \frac{36}{9} \\ \\ x = 4$

b)

$\frac{2x}{3} + \frac{5(x - 4)}{2} \\ \\ \frac{2x}{3} + \frac{5x - 20}{2}$

MMC de 2 e 3   = 6 
$\frac{4x + 15x - 60 }{6} \\ \\ \frac{19x - 60 }{6} \\ \\ 19x - 60 = 0 \\ \\ 19x = 60 \\ \\ x = \frac{60}{19}$

$x = \frac{60}{19} \\ \\ x = 3,15$ 
 aproximadamente