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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