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Mathematics
, 08.11.2019 17:31
queenkimm26
Which ordered pair is the solution to the system of equations?
x+y=-1
x-3y=11
a.
(2, −3)
b.
(−2, 1)
c.
(5, −2)
d.
(−6, 5)
Answers: 1
Show answers
Answers
Answer from:
kevinmoore4233
X+y=-1
x-3y=11
(subtract equation)
4y = -12
y = -12/4
y= -3
(substitute y)
x-3=-1
x=-1+3
x=2
Answer > A (2,-3)
-5x-3y=12
x-3y=-6
you want to multiply the top equation by -1 to swap the signs and make the x's positive like the bottom equation
5x+3y=-12
x-3y=-6
then you have to multiply every value in the bottom equation by 5 so you are able to subtract it from the top equation
5x+3y=-12
5x-15y=-30
(subtract)
18y=18
y=18/18
y=1
(substitute y)
x-3=-6
x=-6+3
x=-3
answer = (-3,1)
Answer from: Quest
1,645,493,059.35
step-by-step explanation:
Answer from: Quest
21/58.
hope to be marked brainliest
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Which ordered pair is the solution to the system of equations?
x+y=-1
x-3y=11
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