rakinuddin78
rakinuddin78
24-11-2016
Mathematics
contestada
4x+3y=19
3x-5y=7
?????????
Respuesta :
rosesj3172
rosesj3172
24-11-2016
4x+3y=19
3x-5y=7
(3)4x+3y=19
(-4)3x-5y=7
12x+9y=57
-12x+20y=-28
----------------------
29y=29
------------
y=1
4x+3(1)=19
4x+3=19
-3 -3
--------------
4x=16
--------
x=4
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