90/360 - 39/1404 = ?
y + 60 = 360 + 90
y - 60 = 360 - 90
y + 60 = 360 + 90
y + 60 = 450
y = 450 - 60
y = 390
y - 60 = 360 - 90
y - 60 = 270
y = 270 + 60
y = 330
y + 60 = 360 + 90
y + 60 = 450
y = 450 - 60
y = 390
y - 60 = 360 - 90
y - 60 = 270
y = 270 + 60
y = 330
y+60=360+90
y+60=450
y =450-60
y =390.
y-60=360-90
y-60=270
y =270+60
y =330.
Rút gọn các phân số:
a) 45/60
b)39/12
c)81/90
d)360/720
e)24/20
g)66/65
...)66/55
\(a,\frac{45}{60}=\frac{45:15}{60:15}=\frac{3}{4}\)
\(b,\frac{39}{12}=\frac{39:3}{12:3}=\frac{13}{4}\)
\(c,\frac{81}{90}=\frac{81:9}{90:9}=\frac{9}{10}\)
\(d,\frac{360}{720}=\frac{360:360}{720:360}=\frac{1}{2}\)
\(e,\frac{24}{20}=\frac{24:4}{20:4}=\frac{6}{5}\)
\(g,\frac{66}{65}=\frac{66}{65}\)
\(...,\frac{66}{55}=\frac{66:11}{55:11}=\frac{6}{5}\)
a) 45/60 = 3/4
b) 39/12 = 13/4
c) 81/90 = 9/10
d) 360/720 = 1/2
e) 24/20 = 6/5
g) 66/65 = 66/65
h) 66/55 = 6/5
mik nha !~
a,(-2021+37)-(-63-2021)
b,(-24-360)+(76+360)
c,-(34+27-39)+(-112+34-39)
d.(24-1997)+(36+1997)
3120/1404 rút gọn là
x + 90 = 360 + 30
x + 90 = 360 + 30
x + 90 = 390
x = 390 - 90
x = 300
kết bạn rùi k mik nhé
x +90 = 360 +30
x + 90 = 390
x = 390 - 90
x = 300
ai k mk mình k lại nha
x + 90 = 360 + 30
x + 90 = 390
x = 390 - 90
x = 300 ai k mk,mk k lại~~
360:(x-7)=90
360:(x-7)=90
(x-7)=360:90
(x-7)=4
x=4+7
x=11
a)(1315+1404)x3
=
=
b)1315+1404x3
=
=
=2719.3 (. là nhân)
=8157
b =1315+4212
=5527
ht
(x+13):5=12
360:(x-7)=90
360 : (x-7 ) = 90
( x - 7 ) = 360 : 90
x - 7 = 4
x = 4 + 7
x = 11
Tìm x biết :
3^x -1 +5,3^x+4,3^x+1 = 1404
-> giúp mình với <-
2n-2+3+2n-2+5=1404