(x+1/4-1/3).(13/6-1/4)=7/46
(x+1/4-1/3).23/12=7/46
(x+1/4-1/3)=7/46:23/12
(x+1/4-1/3)=7/46.12/23
(x+1/4-1/3)=42/529
x+1/4=42/529+1/3
x+1/4=655/1587
x=655/1587-1/4
x=1033=/6348
vậy x=1033/6348
(x+1/4-1/3).(13/6-1/4)=7/46
(x+1/4-1/3).23/12=7/46
(x+1/4-1/3)=7/46:23/12
(x+1/4-1/3)=7/46.12/23
(x+1/4-1/3)=42/529
x+1/4=42/529+1/3
x+1/4=655/1587
x=655/1587-1/4
x=1033=/6348
vậy x=1033/6348
so sánh các phân số:
a)\(\frac{2}{3}và\frac{1}{4}\)
b)\(\frac{7}{10}va\frac{7}{8}\)
c)\(\frac{6}{7}va\frac{3}{5}\)
d)\(\frac{14}{21}va\frac{60}{72}\)
e)\(\frac{16}{9}va\frac{24}{13}\)
g)\(\frac{27}{82}va\frac{26}{75}\)
So sánh hai phân số: \(\frac{-7}{31}va\frac{6}{31}\);\(\frac{-97}{128}va\frac{-99}{128}\) ;\(\frac{3}{7}va\frac{-6}{7}\);\(\frac{2}{5}va\frac{4}{5}\)\(\frac{-2}{5}va\frac{13}{5}\)\(\frac{4}{9}va\frac{7}{9}\)\(\frac{5}{12}va\frac{7}{12}\)\(\frac{-7}{15}va\frac{-8}{15}\)\(\frac{-2}{5}va\frac{4}{5}\)\(\frac{4}{7}va\frac{3}{7}\)\(\frac{-11}{13}va\frac{-15}{13}\)\(\frac{-2}{7}va\frac{-4}{14}\)\(\frac{_{-5}}{7}va\frac{-10}{7}\)\(\frac{-13}{5}va\frac{1}{5}\)\(\frac{-6}{7}va\frac{-3}{7}\)\(\frac{3}{7}va\frac{5}{7}\)\(\frac{-7}{9}va\frac{-5}{9}\)\(\frac{-3}{7}va\frac{-5}{7}\)\(\frac{-13}{9}va\frac{1}{9}\) so sánh số cùng mẫu số \(\frac{-7}{13};\frac{-4}{13}\) \(\frac{1}{7};\frac{-4}{-7}\)
Bài 1: Sắp xếp các phân số sau theo thứ tự:
a) Tăng dần: \(\frac{-5}{6};\frac{7}{8};\frac{7}{24};\frac{16}{17};\frac{-3}{4};\frac{2}{3}\)
b) Giảm dần: \(\frac{-5}{8};\frac{7}{10};\frac{-16}{19};\frac{20}{23};\frac{214}{315};\frac{205}{107}\)
Bài 2: So sánh hai phân số:
a) \(\frac{102}{97}va\frac{99}{101}\)
b)\(\frac{-5}{14}va\frac{-4}{11}\)
Tình
A) 53 và 35
B) 1619 và 825
c)2711 va 818
d) 6255 và 1257
F)536 va 1124
G) 523 va 6.522
H) 7.213 và 216
L) 2115va 275.498
bai 1: so sanh
a)371320 va 111979
b)2711va 818
c)32n va 234
d)339 va 1121
e)536 va 1124
g)2115 va 27* 498
f)19920 va 200315
1) tim x biết:
a) (19.x +2.5^2) : 14=(13-8)^2 - 4^2
b) 2.3^x=10.3^12+8.27^4
2) so sanh
a) 5^23 va 6.5^22
b)21^15 va 27^5.49^8
c)3^39 va 11^21
d) 7.2^13 va 2^16
bai 1: so sanh
a)371320 va 111979
b)2711va 818
c)32n va 234
d)339 va 1121
e)536 va 1124
g)2115 va 27* 498
f)19920 va 200315
bai 1 :thuc hien phep tinh
a)\(\frac{-5}{2}:\left(\frac{3}{4}-\frac{1}{2}\right)\) b) \(11\frac{3}{13}-\left(2\frac{4}{7}+5\frac{3}{13}\right)\) c)\(\left(\frac{-5}{24}+0,75+\frac{7}{12}\right):\left(-2\frac{1}{4}\right)^2\)
AI LAM NHANH VA DUNG THI MK SE TICK CHO NHA
MK DAG CAN GAP !!!!!!! CAC BAN LAM NHANH LEN NHA
tinh va viet ket qua duoi dang phan so va hon so
A =\(5+\frac{1}{1-\frac{1}{4+\frac{1}{3-\frac{1}{8+\frac{1}{2-\frac{1}{7}}}}}}\)