Question

1) { 4х-3у=-3 {5х-у=322) {-6х+5у=2 {8х-3у=13) {6у -7х=10 {у+3х=-154) {4х-3у=-1 {10х-4у=1Допоможіть(​ Посмотреть ответы Пеппер Пеппер 1) {4х-3у=-3      4х-3(5х-32)=-3     4х-15х+96=-3    -11х=-99    х=9 {5х-у=32        у=5х-32               у=5х-32            у=5х-32    у=45-32=13 Відповідь: (9; 13) 2) {-6х+5у=2 (помножимо на 3)    -18х+15у=6              -18*0,5+15у=6; {8х-3у=1   (помножимо на 5)    40х-15у=5               -9+15у=6; 15у=15; у=1.                                                      22х    =  11;  х=0,5 Відповідь: (0,5; 1) 3) {6у -7х=10       6(-3х-15)-7х=10;    -18х-90-7х=10;  -25х=100;     х=-4 {у+3х=-15         у=-3х-15                у=-3х-15           у=-3*(-4)-15;   у=-3 Відповідь: (-4; -3) 4) {4х-3у=-1  (помножимо на 4)    16х-12у=-4        10*0,5-4у=1; 5-4у=1; {10х-4у=1 (помножимо на -3)   -30х+12у=-3      4у=4;   у=1                                                  -14х =  -7;  х=0,5 Відповідь: (0,5; 1) niko13kartochek niko13kartochek Ответ: 1) {4х-3у=-3 4х-3(5х-32)=-3 4х-15х+96=-3 -11х=-99 х=9 {5х-у=32 у=5х-32 у=5х-32 у=5х-32 у=45-32=13 Відповідь: (9; 13) 2) {-6х+5у=2 (помножимо на 3) -18х+15у=6 -18*0,5+15у=6; {8х-3у=1 (помножимо на 5) 40х-15у=5 -9+15у=6; 15у=15; у=1. 22х = 11; х=0,5 Відповідь: (0,5; 1) 3) {6у -7х=10 6(-3х-15)-7х=10; -18х-90-7х=10; -25х=100; х=-4 {у+3х=-15 у=-3х-15 у=-3х-15 у=-3*(-4)-15; у=-3 Відповідь: (-4; -3) 4) {4х-3у=-1 (помножимо на 4) 16х-12у=-4 10*0,5-4у=1; 5-4у=1; {10х-4у=1 (помножимо на -3) -30х+12у=-3 4у=4; у=1 -14х = -7; х=0,5 Объяснение: Новые вопросы в Алгебра 3. Розв'яжіть задачу. За 3м сукна і 4м бавовняної тканини заплатили 58грн. Скільки коштує 1м сукна і 1м бавовняної тканини окремо, якщо за 7м сукна й … 2м бавовняної тканини заплатили 128 грн.​ 2.Спростіть вираз (x+5)^2-(x-5)(x+5)+5(3x-5)i знайдіть його значення при х=-12/5.​ Доведи, що V119-V67 &lt; 3. Оціни значення виразів a + b і a – b, якщо -4 &lt; a &lt; -2, 7 &lt; b &lt; 9 Порівняй числа х і у, якщо х &lt; 5 і 5 &lt; у. А) х &gt; у; Б) x &lt; y; В) x = y. Предыдущий Следующий Вместе мы знаем больше Этот сайт использует cookies Политика Cookies . Вы можете указать условия хранения и доступ к cookies в своем браузере. 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Answer 1

Ваші обчислення для систем рівнянь виглядають вірно, і ви вже знайшли їх розв'язки. Ось розв'язки кожної з систем:

1. (9; 13)
2. (0,5; 1)
3. (-4; -3)
4. (0,5; 1)

Якщо у вас є додаткові питання або потрібна допомога з іншими завданнями, будь ласка, питайте.