tim x biet 1- (5/3/8 + x - 7/5/24 ) / 16/2/3 =0
tim x biet 55/8 <x <64/9
tim so tu nhien x biet 55/8<x<64/9
tim so tu nhien x biet 55/8 < x < 64/9
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 x biet 3/4*x :1/2=4/5
Giup minh voi tim x biet
5/3 - 1/3 : ( 1 - x . 1/3 ) = 7/6
3 - ( x : 1/2 +3/2 ) - 1/4 = 1/2
tim x biet 3/5 - 1/4 : x = 25/100
tim x biet
a] X+4x2=14,3x2 B] 8.75 x X +1,25 x X = 26,3 C] 1/5+[x-1]=0,2 D] 1/3+1/2 x X=1 E] [X-3/4 ] x 2+1/2-1,5 = 1 F] [X-5] x [3-x] = X-5