Diketahui persamaan 3x+7y = -1 X-3y =5 Berapakah hasil dari 3x+2y=......

3x+7y = -1
X - 3y=5 —> dikali 3

=3x+7y =-1
3x-9y=15
Dikurang

= 16y = -16
Y= -1

[tex]3x + 7y = - 1 \\ 3x - 9y = 15 \\ \\ 16y = - 16 \\ y = - 1 \\ \\ x - 3y = 5 \\ x - 3( - 1) = 5 \\ x + 4 = 5 \\ x = 1 \\ \\ 3x + 2y = 3(1) + 2( - 1) = 1[/tex]