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Question 927304: 7x-3y-43=0 use elimination to solve
3x+7y-35=0
the solution set is _____
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! 7x-3y-43=0
3x+7y-35=0
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put the system of linear equations into standard form
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7x - 3y = 43
3x + 7y = 35
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = 7
y = 2
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by elimination:
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7(7x - 3y = 43)
3(3x + 7y = 35)
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49x - 21y = 43*7
9x + 21y = 35*3
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add the two equations:
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58x = 43*7 + 35*3
x = (43*7 + 35*3)/58
x = 7
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3x + 7y = 35
3*7 + 7y = 35
7y = 35 - 3*7
y = (35 - 3*7)/7
y = 2
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solution by elimination:
x = 7
y = 2
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