-4x+y+6
-5x-y=21
solve by substitution
1 answer:
Answer:
x = 15/-9
y = -114/9
Step-by-step explanation:
-4x + y + 6
-4x + y = -6
-5x - y = 21
-4x + y = -6
-5x - y = 21
__________+
-9x = 15
x = 15/-9
-4x + y = -6 | ×5 |
-5x - y = 21 | ×4 |
-20x + 5y = -30
-20x - 4y = 84
_____________--
9y = -114
y = -114/9
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Have a great day!!
