Question

Решить систему уравнений
x+y=19.6
x/y=0.13

Answer 1

$left { {{x+y=19,6} atop {frac{x}{y} =0,13}} right.\ \left { {{x+y=19,6} atop {x=0,13y}} right. \\left { {{0,13y+y=19,6} atop {x=0,13y}} right.\\left { {{1,13y=19,6} atop {x=0,13y}} right. \\left { {{y=frac{19,6}{1,13} } atop {x=frac{0,13*19,6}{1,13} }} right. \ \\left { {{y=frac{19,6}{1,13} } atop {x=frac{2,548}{1,13} }} right.$

условие правильное?