Question

simplify 9÷2 + (-4÷5) + (-5÷2) + 7÷5​

Answer 1

Answer:2.6

Step-by-step explanation:

$\frac{9}{2} +\frac{(-4)}{5} +\frac{(-5)}{2} +\frac{7}{5} \\=\frac{9}{2} +\frac{(-5)}{2} +\frac{(-4)}{5} +\frac{7}{5}\ (rearranging)\\=\frac{9+(-5)}{2}+\frac{(-4)+7}{5}\\=\frac{9-5}{2}+\frac{-4+7}{5}\\=\frac{4}{2}+\frac{3}{5}\\\\=\frac{20}{10}+\frac{6}{10}\\\\=\frac{20+6}{10}\\\\=\frac{26}{10}\\\\=2.6$