Answer:
(x, y) = (10, -5)
Step-by-step explanation:
3x + 9y = -15 (eq 1)
-5x - 9y = -5 (eq 2)
add equation 1 and 2
3x + 9y -5x -9y = -15 - 5
-2x = -20
x = 10
put value of x in equation 1
3(10) + 9y =-15
30 + 9y = -15
9y = -45
y = -5
Answer:
10 -5
--4 7
Step-by-step explanation:
This is a tough concept to explain in writing like this, sorry.
Answer:
B.
Step-by-step explanation:
Answer:
90!
Step-by-step explanation:
Umm... I think it would be 70/12....
35*2=70
6*2=12
You could do this with 3, 4 and so on...
