Seseorang anak merahasiakan tiga bilangan . dia hanya memberi tahu jumplah dari masing dua bilangan tersebut secara berturut turut adlah 28 ,36, 44.tentukan jumplah ketiga bilangan tersebut
Takamori37
A+b = 28 (i) b+c = 36 (ii) a+c = 44 (iii) (i) a+b = 28, b = 28-a (ii) b+c = 36, (28-a)+c=36 c-a = 8 (iii) a+c = 44 dan c-a = 8 Sehingga a = 18, c = 26 a+b = 28, 18+b = 28, b = 10 a+b+c = 18+10+26 = 54
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assamoria
X + y = 28 ---> x + y + 0 = 28 x + z = 36 ---> x + 0 + z = 36 y + z = 44 ---> 0 + y + z = 44 x+y + z = ....
b+c = 36 (ii)
a+c = 44 (iii)
(i)
a+b = 28, b = 28-a
(ii)
b+c = 36, (28-a)+c=36
c-a = 8
(iii)
a+c = 44 dan c-a = 8
Sehingga a = 18, c = 26
a+b = 28, 18+b = 28, b = 10
a+b+c = 18+10+26 = 54
x + z = 36 ---> x + 0 + z = 36
y + z = 44 ---> 0 + y + z = 44
x+y + z = ....
Penyelesaian:
(x + y) + (x + z) + (y + z) = 28 + 36 + 44
2x + 2y + 2z = 102
(2x + 2y + 2z = 102) : 2 = x + y + z = 51.