3/5-1/4:x=25/100
1/4:x=25/100+3/5
1/4:x=17/20
x=17/20x1/4
x=17/80
Vậy x=17/80
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tim x biet
128 - 3 ( x + 4 )=25 - 2
( 15 - 6 x ) =3
24 + 5 nhân x = 49
219 - 7 ( x + 1 ) = 100
ai nhanh mk tick
kb nha
3/5-1/4:x=25/100
tim x
Tim x biet : 75 % ×x + 3/4 =30; x+ 52 % =304 x× 10,01-x:100=74
Tim x biet
a) 25,4 - \(\frac{1}{4}\): x + 1250%=37,5
b) \(3\frac{1}{8}\):(\(\frac{2}{5}\)- x) nhan \(\frac{8}{25}\)=3
tim x biet 3/4*x :1/2=4/5
tim x biet 7+x/12=2/3 b)25-x/18=1/2
1. Tim x la so tu nhien be nhat sao cho :
( x - 8,25 * 4 ) : ( x - 8,25 * 4 ) = 1
2. Tim so a , biet a la tu nhien le nho hon 100 va trong phep chia a cho b duoc thuong la 3 du 22
tim x biet
X x 5 + X x 3 = 73,6
100 x [ X + 4,9 ] = 542,6
[ X - 46,8 ] x 1000 = 784,3
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