Question

Mohon bantuan.a ya teman2 . . .

1) 2x-3y=2
x- y=1

2) 7x-3y=13
3x+5y=-7

Answer 1

1. 2x -3y = 2
x - y = 1
=> 2x -  3y = 2
     3x - 3y = 3
------------------------------- -
 -x = -1
x= 1
x-y = 1
1-y=1
-y = 0
y = 0
2.) 7x - 3y = 13
3x + 5y = -7
= 35x - 15y = 65
   9x + 15y = -21
------------------------------ +
44y = 44
y= 1
3x +5y = -7
3x + 5 = -7
3x = -12
x = -4

maaf kalau salah :)