-y+8y=?
What is the answer please?
1 answer:
Answer:
y = -6/7
x = 6/49
Step-by-step explanation:
-7x -y = 0
7x +8y = -6
Add the two equations together to eliminate x
-7x -y = 0
7x +8y = -6
-----------------------
7y = -6
Divide by 7
7y/7 = -6/7
y = -6/7
Now we need to find x
-7x -y = 0
-7x -(-6/7) =0
-7x +(6/7) =0
-7x +6/7 -6/7 =0-6/7
-7x = -6/7
Divide each side by -7
-7x/-7 = -6/7 *-1/7
x = 6/49
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