alancon22
alancon22
11-04-2017
Mathematics
contestada
How to find where the equations meet.
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IcefromTaiwan
IcefromTaiwan
11-04-2017
the first sentence → x - 2y = -1
the second one → 3x - 2y = -3
multiply the first one by -1
you can get → -x + 2y = 1
plus two sentences together
you can get → 2x = -2
so you are able to know that x = -1
and y = 0
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