tim b biet
a+b=ab=a/b
Những câu hỏi liên quan
Bai 1: Tim ab ; biet ab = b x 9
Bai 2 : Tim ab, biet :
a) ab x 5 = 2ab b) ab = 4ab / 9.
Bai 3 : Tim ab, biet : a 2 = b x 5
Bai 4 : Tim cac so ab biet :
a) a x3 = bx9 b) a x4 = b x6.
Bai 5 :
a) Tim abc, biet a , b , c khac nhau va : a x bc = 91.
b) Tim a , b , c khac nhau biet aa x bc = 1001
tim a,b biet :
0.abx0.ab=0.0cab
tim a,b,c biet
a,b=b,ax3+0.5
1: tim a,b biet
a,b=b,a*3+1,3
2: tim cac chu so a,b,c,d biet:
a=b+1
(a,b+1,5)*c.d=14,4
(a,b+0,5)*c,d
tim a,b,c biet
0,a+a,b+ab,c=bc,b
giup toi voi
tim a,b biet : a+b=ab=a/b
ta co ;a+b = ab=>a=ab-b=>a=b(a-1)
a+b=a/b=>a/bthay a=b(á-1)vào vế phải
=>a+b=b(a-1)/b=a-1
a+b=a-1=>b=-1 Tacoa+b =ab thay b=-1 ta co a+-1=-1a=>a-1=-a =>2a=-1=>a=-1/2
vay b =-1 a=-1/2
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tim a ; b ;c ;d biet
ab,cd-a,bcd=11,106
tim a,b biet (chu y :a,b la so thap phan)
a,b * 9,9=aa,bb
tim a,b biet bbb =a*b*ab
tim UCLN (ab,a+b) biet UCLN (a,b)=1
tim a,b (0<a≤9,0≤b≤9) biet aabb=99.ab
tim chu so a,b biet ab + ba chia het cho 3 va 4tim chu so a,b,c biet abc chia het cho 5 va 9,a + b = 2c
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