Решите на множестве действий чисел метолом подстановки систему уровнений : {x-y=2 , 2x-3y=2;
x=2+2=4\\\\(x;y)=(4;2)" alt="\left \{ {x-y=2} \atop {\ 2x-3y=2}} \right. \\\\x=y+2\\\\2(y+2)-3y=2\\\\2y+4-3y=2\\\\-y=-2\\\\y=2\\\\x=y+2=>x=2+2=4\\\\(x;y)=(4;2)" align="absmiddle" class="latex-formula">
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x=2+2=4\\\\(x;y)=(4;2)" alt="\left \{ {x-y=2} \atop {\ 2x-3y=2}} \right. \\\\x=y+2\\\\2(y+2)-3y=2\\\\2y+4-3y=2\\\\-y=-2\\\\y=2\\\\x=y+2=>x=2+2=4\\\\(x;y)=(4;2)" align="absmiddle" class="latex-formula">