Question

Me ayudan porfa es urgente ​

Answer 1

$\frac{ - 7}{3} - \frac{ 9}{3} = \frac{ - 7 - 9}{3} = \boxed{\bold{ \frac{ - 16}{3} }}$

$\frac{ -7 }{4} + (\frac{ - 3}{4}) + ( \frac{ - 9}{4} ) = - \frac{7}{4} - \frac{3}{4} - \frac{9}{4} = \boxed{\bold{ - \frac{19}{4} }}$

$\frac{1}{9} - \frac{4}{9} = \frac{1 - 4}{9} = \boxed{\bold{ - \frac{3}{9} = - \frac{1}{3} }}$

$2 \frac{3}{4} - 1 \frac{2}{3} \\ \\ \frac{2 \times 4 + 3}{4} = \frac{11}{4} \\ \\ \frac{1 \times 3 + 2}{3} = \frac{5}{3} \\ \\ \frac{11}{4} - \frac{5}{3} = \frac{33- 20}{12} = \boxed{\bold{ - \frac{13}{12} }}$