Question

{7х +9у+48=0 {6х+3у+27=0

Answer 1

{7х +9у+48=0 {7х+9у=-48 {7х=-48
{6х+3у+27=0Ⅰ×(-3){-18х-9у=-81 {7х+9у=-48

{х=-6 6/7 {х=-6 6/7{х=-6 6/7
{9у=-48 - 7×6 6/7 {9у=-96 {у=-10 2/3
Ответ:(-6 6/7；-10 2/3)