Question

решите уравнения 1.-32,314:y=5,35
2.-a*7,1=216,55
3.-7,7418:x=2,07

Answer 1

$1) - \frac{16157}{500}* \frac{1}{y}=5,35 \\ \\ - \frac{16157}{500y}=5,35 \\ \\ -16157=2675y \\ \\ y=- \frac{151}{25} = -6,04$
------------------
$2) -7,1a=216,55 \\ \\ a=216,55:(-7,1) \\ a=-30,5$
------------------
$3) - \frac{38709}{5000}* \frac{1}{x}=2,07 \\ \\ - \frac{38709}{5000x}=2,07 \\ \\ -38709=10350x \\ \\ x=- \frac{38709}{10350} \\ \\ x=- \frac{187}{50}=-3,74$