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Mathematics
Athena Compton
10 May, 20:33
Solve the system of equations.
14x+5y=31
2x-3y=-29
+3
Answers (
1
)
Sara
10 May, 21:14
0
(x, y) = (-1, 9)
Step-by-step explanation:
A graphical solution can be quick and easy. It shows the solution to be ...
(x, y) = (-1, 9)
__
Another suitable method is Cramer's rule. It makes use of a particular pattern of sum of products of coefficients and constants. The denominator in each case is the same sum of products.
x = (5 (-29) - (-3) (31)) / (5 (2) - (-3) (14)) = - 52/52 = - 1
y = (31 (2) - (-29) (14)) / 52 = 468/52 = 9
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