Question

3-4+ 1-4 =, 2-9 +5-9 - 4-9 =, 3-4 +6-4 =,3-4 - 2-4 =

Answer 1

$\frac{3}{4} + \frac{1}{4} = \frac{4}{4} = 1$
$\frac{2}{9} + \frac{5}{9} - \frac{4}{9} = \frac{3}{9} = \frac{1}{3}$
$\frac{3}{4} + \frac{6}{4} = \frac{9}{4}$
$\frac{3}{4} - \frac{2}{4} = \frac{1}{4}$

Answer 2

 + 3-4+1-4= 2-9+5-9-4-9=3-4+6-4+3-4-2-4=
-4= -24=-4
agora mudou completamente o cálculo:
3/4 + 1/4 = 4/4= 1
 2/9 +5/9 = 7/9 - 4/9= 3/9
3/4+ 6/4 = 9/4
3/4 - 2/4 = 1/4