candycane6019 candycane6019

29-03-2017
Mathematics

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x+7y=24 and x-9y=-24 doing elimination

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campbellst2005 campbellst2005

29-03-2017

the easy thing to do is eliminate x by subtraction

x + 7y = 24
- x - 9y = -24
-------------------
16y = 48

now solve for y and then substitute the value into either original equation to find x

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