Question

x + y = 9
5x + 4y = 47​

Answer 1

Answer:

x= 11, y= -2

Step-by-step explanation:

$x + y = 9 \\ = > y = 9 - x \\ now \\ \: \: \: 5x + 4y = 47 \\ putting \: the \: value \: of \: y \: we \: get \\ = > 5x + 4(9 - x) = 47 \\ = > 5x - 4x + 36 = 47 \\ = > x = 47 - 36 \\ = > x = 11 \\ now \\ \: \: \: y = 9 - x \\ = > y = 9 - 11 \\ = > y = - 2 \\ x = 11..y = - 2$