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elvinka792349
@elvinka792349
June 2023
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Розв‘яжи рівняння а)х-1/4=3/7 б)1/2-х=3/8 в) у+ 4/15 =5/12 ДОПОМОЖІТЬ БУДЬ ЛАСКА ДАЮ 40 БАЛЛІВ
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denisgoga73p5hk68
a) x - 1/4 = 3/7; (помножимо ліву і праву частину на 28);
28x - 7 = 12;
28x = 19
x = 19/28.
б) 1/2 - x = 3/8; (* 8)
4 - 8x = 3;
-8x = -1;
x = 1/8.
в) y + 4/15 = 5/12; (*60 - це найменше спільне кратне 15 і 12)
60y + 16 = 25;
60y = 9;
y = 9/60;
y = 3/20.
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Answers & Comments
28x - 7 = 12;
28x = 19
x = 19/28.
б) 1/2 - x = 3/8; (* 8)
4 - 8x = 3;
-8x = -1;
x = 1/8.
в) y + 4/15 = 5/12; (*60 - це найменше спільне кратне 15 і 12)
60y + 16 = 25;
60y = 9;
y = 9/60;
y = 3/20.