(Х-16) х 9= 126 28 х ( Х+5) = 224 (Х+76) : 7 = 15 144: ( Х-3) = 36 21 х (у-8) = 84 (Х+67)...

Question

(Х-16) х 9= 126
28 х ( Х+5) = 224
(Х+76) : 7 = 15
144: ( Х-3) = 36
21 х (у-8) = 84
(Х+67) : 18 = 4
РЕШИТЕ УРАВНЕНИЯ ^-^

Answer 1

▪(Х-16) х 9= 126
х-16 = 126 ÷ 9
х-16=14
х= 14 + 16
х = 30
______

▪28 х ( Х+5) = 224
х+5 = 224 ÷ 28
х+5 = 8
х = 8 - 5
х = 3
______

▪(Х+76) : 7 = 15
х+76 = 15 × 7
х+76 = 105
х = 105 - 76
х = 29
_________

▪144: ( Х-3) = 36
х-3 = 144 ÷ 36
х-3 = 4
х = 4+3
х = 7
________

▪21 х (у-8) = 84
у-8 = 84 ÷ 21
у-8 = 4
у = 4 + 8
у = 12
________

▪(Х+67) : 18 = 4
х+67 = 4 × 18
х+67 = 72
х = 72 - 67
х = 5