x.2=4/11.11/9
x.2=4/9
x = 4/9:2
x = 4/(9.2)
x = 4/18=2/9
x.2=4/11.11/9
x.2=4/9
x = 4/9:2
x = 4/(9.2)
x = 4/18=2/9
11.11=4
22.22=16
33.33=?
-7/11.11/19+8/19. -7/11+ -4/11= ?
11.11=4
22.22=16
vậy 33.33=?
giúp mk với nha
a) -7/5+8/13+-3/5+5/13 b) 5/4+9/11.11/12 c) 1/2.8/17+1/2.2/17+1/2.7/17
3^11.11+3^11.21/3^9.2^5
bai3 so sánh các tổng sau:
a, 1.1+5.5+6.6 va 2.2+3.3+7.7
b,(1+2+3+4).(1+2+3+4)va 1.1.1+2.2.2+3.3.3+4.4.4
c, 10.10+11.11+12+12va 13.13+14
d, 85.(8+5)va 8.8.8+555
a, -3/5 = ? = ? = ?
b, 3/ x - 5 = -4 / x + 2, hoi x bang bao nhieu?
so cac so nguyen x thoa man 4(x+2) chia het cho x+1 la bao nhieu?can dap so
1) tim cac so tu nhien x sao cho:
a)6chia het cho (x-1)b) 14 chia het cho(2x+3)
2)a) co bao nhieu boi cua 4 tu 12 den 200?
b)co bao nhieu so tu nhien co 4 chu so chia het cho 3