Answer:
x = 21/-15
y = 24/15
Step-by-step explanation:
-3x + 3y = 9 | ×2 |
2x - 7y = -14 | ×3 |
-6x + 6y = 18
6x - 21y = -42
__________+
-15y = - 24
y = -24/-15
y = 24/15
-3x + 3y = 9 | ×7 |
2x - 7y = -14 | ×3 |
-21x + 21y = 63
6x - 21y = -42
_____________+
-15x = 21
x = 21/-15
