Question

resposta 2x+4y=10》》 sobre 》6x+2y=6. método da adição? ?

Answer 1

$2x + 4y = 10 \: \: ( \times 3) \\ 6x + 2y = 6 \\ \\ 6x + 12y = 30 \\ 6x + 2y = 6 \\ \\ 10y = 24 \\ y = \frac{24}{10} = \frac{12}{5} \\ \\ 6x + 2( \frac{12}{5} ) = 6 \\ 6x + \frac{24}{5} = 6 \\ \frac{30x + 24}{5} = 6 \\ 30x + 24 = 30 \\ 30x = 6 \\ x = \frac{6}{30} = \frac{1}{5} \\ \\ (x,y) = ( \frac{1}{5} , \frac{12}{5} )$