Question

109. Теңдеуді шешіңдер:
1) (x-16) 9=126;
2) 28 (x+5)=224;
3) (x+76): 7-15;
4) 144 (x-3)=36;
5) 21 (y-8)=84;
6) (x+67): 18=4.​

Answer 1

Сіздің көмегіңізге қол жеткізерсіз:

(x - 16) * 9 = 126
(x - 16) = 126 / 9
(x - 16) = 14
x = 14 + 16
x = 30

28 * (x + 5) = 224
(x + 5) = 224 / 28
(x + 5) = 8
x = 8 - 5
x = 3

(x + 76) / 7 - 15
(x + 76) / 7 - 15 = 0
(x + 76) / 7 = 15
x + 76 = 15 * 7
x + 76 = 105
x = 105 - 76
x = 29

144 * (x - 3) = 36
(x - 3) = 36 / 144
(x - 3) = 1/4
x = 1/4 + 3
x = 3 1/4

21 * (y - 8) = 84
(y - 8) = 84 / 21
(y - 8) = 4
y = 4 + 8
y = 12

(x + 67) / 18 = 4
(x + 67) / 18 = 4
(x + 67) = 4 * 18
(x + 67) = 72
x = 72 - 67
x = 5