Ответы на вопрос:
Объяснение:
\left \{ {{x=1} \atop {x+y=8}} \right. => \left \{ {{x=1} \atop {(1)+y=8}} \right. =>\left \{ {{x=1} \atop {y-7=0}} \right. => \left \{ {{x=1} \atop {y=7}} \right." class="latex-formula" id="TexFormula2" src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7B2x%3D2%7C%3A2%7D%20%5Catop%20%7Bx%2By%3D8%7D%7D%20%5Cright.%20%3D%3E%20%5Cleft%20%5C%7B%20%7B%7Bx%3D1%7D%20%5Catop%20%7Bx%2By%3D8%7D%7D%20%5Cright.%20%3D%3E%20%5Cleft%20%5C%7B%20%7B%7Bx%3D1%7D%20%5Catop%20%7B%281%29%2By%3D8%7D%7D%20%5Cright.%20%3D%3E%5Cleft%20%5C%7B%20%7B%7Bx%3D1%7D%20%5Catop%20%7By-7%3D0%7D%7D%20%5Cright.%20%3D%3E%20%5Cleft%20%5C%7B%20%7B%7Bx%3D1%7D%20%5Catop%20%7By%3D7%7D%7D%20%5Cright." title="\left \{ {{2x=2|:2} \atop {x+y=8}} \right. => \left \{ {{x=1} \atop {x+y=8}} \right. => \left \{ {{x=1} \atop {(1)+y=8}} \right. =>\left \{ {{x=1} \atop {y-7=0}} \right. => \left \{ {{x=1} \atop {y=7}} \right.">
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