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Lacey Bauer
Mathematics
10 July, 13:24
Sole the equations for (x, y) 3x+y=1 and
x-y = - 5
+1
Answers (
1
)
Tony Lawson
10 July, 13:25
0
( - 1, 4)
Step-by-step explanation:
Given the 2 equations
3x + y = 1 → (1)
x - y = - 5 → (2)
Adding the 2 equations term by term eliminates the term in y, that is
(3x + x) + (y - y) = (1 - 5), simplifying gives
4x = - 4 (divide both sides by 4)
x = - 1
Substitute x = - 1 into either of the 2 equations for corresponding value of y
Substituting in (1)
3 ( - 1) + y = 1
- 3 + y = 1 (add 3 to both sides)
y = 4
Solution is ( - 1, 4)
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