Answer:
(x, y) = (3, 8)
Step-by-step explanation:
A graphing calculator can make short work of finding the solution. An example is attached.
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The coefficients in this problem don't really lend themselves nicely to solution by elimination or substitution. For such problems, I like the "cross multiplication method." It tells you the solution is ...
1/d1 = x/d2 = y/d3 ⇒ x = d2/d1, y = d3/d1
where ...
d1 = 4·5 -3·9 = -7
d2 = 9(-49) -5(-84) = -21
d3 = -84(3) -(-49)(4) = -56
Then ...
(x, y) = (-21/-7, -56/-7)
(x, y) = (3, 8)
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For more on the cross multiplication method of solving linear equations, please see ...
https://brainly.com/question/26397343
