3x + y = -2 | ×3
-2x + 3y = 5 | ×1
✓ 9x + 3y = -6
-2x + 3y = 5
---------------------------- –
11x = - 11
x = -1
3x + y = -2
3 (-1) + y = -2
-3 + y = -2
y. = -2+3
y. = 1
✓ nilai 2x - y = 2(-1)-1 = -2
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3x + y = -2 | ×3
-2x + 3y = 5 | ×1
✓ 9x + 3y = -6
-2x + 3y = 5
---------------------------- –
11x = - 11
x = -1
3x + y = -2
3 (-1) + y = -2
-3 + y = -2
y. = -2+3
y. = 1
✓ nilai 2x - y = 2(-1)-1 = -2