When solving a system of equations using elimination, it is necessary to make sure the coefficients in front of one of the variables are additive inverses.
A. True
B. False
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jhonyy9 (jhonyy9):
how you think it - do you can writing here one example please ?
jhonyy9 (jhonyy9):
2x+3y=4
x+5y=9
solve this system with elimination method
OpenStudy (anonymous):
False
jhonyy9 (jhonyy9):
@TheDebunker do you understand the question right,correct ?
OpenStudy (phagey):
its true?
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jhonyy9 (jhonyy9):
@phagey how you think it ?
OpenStudy (phagey):
true? @jhonyy9
jhonyy9 (jhonyy9):
are you sure ? why not can being false ?
OpenStudy (phagey):
im really not sure @jhonyy9
jhonyy9 (jhonyy9):
2x+3y=4
x+5y=9
using elimination method you need multiplie or make one variable so that adding them than result zero - in this case multiplie second equation by -2 so will be eliminated the terms with x - yes ?
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jhonyy9 (jhonyy9):
2x+3y =4
-2x -10y=-18
-------------
0 -7y = -14
right ? so how you think it now after you have got this example ?
OpenStudy (phagey):
true
jhonyy9 (jhonyy9):
2x and -2x how are them not additive inverses ?
jhonyy9 (jhonyy9):
yes but than you know anything that is right so you need to be sure indifferent what anybody write wrong answer - ok ,?
good luck
bye bye
OpenStudy (phagey):
thanks
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