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Bas_tet [7]
3 years ago
12

What are the values of x and y for this system of equations? 2x + y = -1 -x + 3y = 18

Mathematics
2 answers:
DedPeter [7]3 years ago
6 0
X=-3 and y=5
2x+y=-1

-x+3y=18
3y-18=x

2(3y-18)+y=-1
6y-36+y=-1
7y=-1+36
7y=35
y=35/7
y=5

-x+3y=18
-x+3(5)=18
-x+15=18
-x=18-15
-x=3
x=-3

sveticcg [70]3 years ago
3 0
X=1+y/2
That's the answer to the first half of the problem shown the whole problem is invalid together
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