Question

Resolva o sistema de equação? {x+ 2y= 3 9x - y = 2

Answer 1

x + 2y = 3
9x - y = 2

4 - (-3) / 18 - (-1) = 7 / 19

X = 7/19

7/19 + 2y = 3
2y = 3 - 7/19
2y = 50/19
y = 50/19 / 2
y = 50/19 . 1/2
y = 50/38