Вопрос школьника по предмету Математика
Помогите пж!!!
Распишите все действия!
Решите уравнения
а) -х=5;
б) -у = -3,4 — 9,1;
в) -у = -10,6 +7;
г) -6 целых 1/7 + у = — 2;
д) — 8 целых 3/11 + х = — 11
Ответ учителя по предмету Математика
а) умножьте обе стороны на (-1) и получим х=-5
б)-у=-12,5 умножаем на (-1) ,получаем у=12,5
в)-у=-10,6+7
-у=-3,6 умножаем на (-1), получаем у=3,6
г)-6 1/7+у=-2
у=-2+6 1/7
у=4 1/7
д)-8 3/11+х=-11
х=-11+8 3/11
х=-2 8/11
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