1 answer:
2x-3y=13
x+2y=-4
First times the second problum by 2.
2x-3y=13
2(x+2y=-4)
Your new problum is
2x-3y=13
2x+4y=-8
Now subtract both problums
2x-3y=13
-2x+4y=-8
------------------
-7y=-21
Now divde the -7 on both sides.
-7y=-21
/7 /-7
---------------
y=2
Now you want to substitute the y for the 2 in on of your problums.
x+2(2)=-4
Now mutiplie the 2 by the 2
x+4=-4
Now subtract the 4 on both sides to solve for x.
x+4=-4
-4 -4
--------------
x=-8
You might be interested in
Answer:
between 120 and 153 mph in race A between 125 and 145 mph in race B
Step-by-step explanation:
i got it right on my test
I got -880 , i’m not sure you can get only
positive exponents...
Answer:
you gayyyyyyy
Step-by-step explanation:
30 + .15x = 20 + .20x
10 = .05x
200= x
200 miles
This is simple the inequality is t<=9