Question

sistema de ecuaciones con coeficiente decimal

Answer 1

0.2 x + 0.3 y = 0.1
$\frac{2}{10} * x + \frac{3}{10} * y = \frac{1}{10}$
2 x + 3 y = 1
2x = 1 - 3y
x = (1 - 3y) / 2

x + 0.5 y = 3.5
$x + \frac{5}{10} * y = \frac{35}{10}$
10 x + 5 y = 35
10 (1 - 3y) / 2 + 5y = 35
5 (1 - 3y) + 5y = 35
5 - 15y + 5y = 35
5 - 10 y = 35
5 - 35 = 10 y
-30 = 10 y
-3 = y

x = (1 - 3(-3)) / 2
x = (1 + 9) / 2
x = 10 / 2
x = 5