Question

$\frac{3}{4} [ \frac{3}{4} + \frac{3}{4} (\frac{3}{4}x+\frac{1}{3})]=3$

Answer 1

[3/4 + 3/4(3x/4 + 1/3)] = 3 : 3/4
3/4 + 9x/16 + 3/12 = 3 * 4/3
9x/16 = (- 3/4 - 3/12) * 4
9x/16 = (- 9/12 - 3/12) * 4
9x/16 = - 12/12 * 4
9x = - 4 * 16
x = - 64/9
x = - 7 si 1/9