Решить систему уравнения 8х+3у=-214х+5у=-7

[latex] left {{{8x+3y=-21} atop {4x+5y=-7 | * (-2)}} ight. \ left { {{8x+3y=-21} atop {-8x-10y=14}} ight. \ left { {{-7y=-7 | : (-7):} atop {8x+3y=-21}} ight. \ left { {{y=1} atop {8x+3*1=-21}} ight. \ left { {{y=1} atop {8x=-21-3}} ight. \ left { {{y=1} atop {8x=-24 | :8}} ight. \ left { {{y=1} atop {x=-3}} ight. [/latex]Ответ: (-3;1)

8х+3у=-214х+5у=-78х+3у=-214х+5у=-7|:(2)8х+3у=-21-8х-10у=14-7у=-7|:(7)У=18х+3=-218х=-3-218х=-24|:8Х=-3ОТВЕТ:(-3;1)