Answer:
Step-by-step explanation:
x=1
answer:
x = - 9/2
y = -10
Step-by-step explanation:
make both equations look like y =
2x-3y=21 -> -3y= -2x+21 -> y = (-2x+21)/-3 -> y = 2/3x - 7
-6x + 2y = 7 -> 2y = 6x + 7 -> y = 3x + 7/2
now make the equations equal to each other (since they both equal y)
get x
2/3x - 7 = 3x + 7/2
-7 -7/2 = 3x - 2/3x
-14/2 -7/2 = 9/3x - 2/3x
-21/2 = 7/3x
(3/7) -21/2 = x
x = (3/7) -21/2
x = - 63/14
x = - 9/2
put it back in an equation to get y
y = 3x + 7/2
y = 3(-9/2) + 7/2
y = -27/2 + 7/2
y = -20/2
y = - 10
brainly.com/question/12203001
Answer:
Step-by-step explanation:
Think of this situation as a number line in which the team starts at 0 yd.
Gaining yards is the positive direction and losing yards is negative.
Start at 0 yd and go 5 yd to the right. You are at +5.
Then go 7 yd left. You end up at -2.
+5 – 7 = -2
(I) 
(II) 
Get 
alone in equation (II)
Insert new equation (II) in equation (I)
Insert 
in equation (II)
