Question

Resolva com o método de adição -x=-1-y/x-y=0

Answer 1

$-x=-1-y~.........~equacao~I\\~~~ x-y=0~....~equacao~II\\ \\ Organize~a~equacao~I:\\ \\ -x=-1-y\\ \\ -x+y=-1~.....~equacao~I\\ ~~~~x-y=~~0~.....~equacaoII~~~~~some~as~equacoes:\\ ~~------\\ ~~~~0+0=-1~~~~~Sistema~impossivel$