Question

Решите систему уравнений способом алгебраического сложения

Answer 1

$left { {{frac{v+1}{2u-4}=frac{1}{2}} atop {frac{5u+v}{3u+6}=1}} right.$

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ОДЗ:

$left { {{2u-4neq0} atop {3u+6neq0}} right. \ \ left { {{2uneq4} atop {3uneq-6}} right. \ \ left { {{uneq2} atop {uneq-2}} right.$

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$left { {{2u-4=2(v+1)} atop {5u+v=3u+6}} right. \ \ left { {{2u-4=2v+2} atop {5u+v-3u=6}} right. \ \ left { {{2u-2v=6} atop {2u+v=6}} right. \ \ left { {{u-v=3} atop {2u+v=6}} right. \ \ left { {{u-v+2u+v=3+6} atop {u-v=3}} right. \ \ left { {{3u=9} atop {u-v=3}} right. \ \ left { {{u=3} atop {3-v=3}} right. \ \ left { {{u=3} atop {v=0}} right.$

Answer 2

Смотри во вложениииии