candycane6019
candycane6019
29-03-2017
Mathematics
contestada
x+7y=24 and x-9y=-24 doing elimination
Respuesta :
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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