Question

Помогите срочно! 37.2​

Answer 1

$2)\; \; a=-2\; ;\; -0,4\; ;\; 0\; ;\; 2,5\\\\\\a=-2:\; \; \dfrac{3a-7}{2a+5}=\dfrac{-6-7}{-4+5}=\dfrac{-13}{1}=-13\\\\\\a=-0,4:\; \; \dfrac{3a-7}{2a+5}=\dfrac{-1,2-7}{-0,8+5}=\dfrac{-8,2}{4,2}=-\frac{x}{y}=-1\frac{20}{21}\\\\\\a=0:\; \; \dfrac{3a-7}{2a+5}=\dfrac{0-7}{0+5}=\dfrac{-7}{5}=-1\frac{2}{5}-1,4\\\\\\a=2,5:\; \; \dfrac{3a-7}{2a+5}=\dfrac{7,5-7}{5+5}=\dfrac{0,5}{10}=0,05$