( 10 + 2x ) : 42011 = 42013
=> 10 + 2x = 42013 . 42011
=> 10 + 2x = 44024
=> 2x = 44024 - 10
=> x = 2.44023 - 5
( 10 + 2x ) : 42011 = 42013
=> 10 + 2x = 42013 . 42011
=> 10 + 2x = 44024
=> 2x = 44024 - 10
=> x = 2.44023 - 5
a] 4 mu 2016: 4 mu 2015 + 10.10 mu 2 =
b] 3 mu 4 . 47 . 63 - 3 mu 4 . 10 =
c] 2016 : { 2464 : [171 - 5 ( 9 mu 2 - 7 mu 2)]} =
d] 1 + 3+ 5 +....... + 2011 + 2013=
cho A = 10 mu 2011 +1 / 10 mu 2012 +1 va B = 10 mu 2012 +1 /10 mu 2013+1
so sanh A va B
cho A = 10 mu 2011 + 1/10 mu 2012 +1 va B = 10 mu 2012 +1 /10 mu 2013 +1
so sanh A va B
tìm số dư của (2013 mu 2015 + 2014 mu 2015 + 2015 mu 2015)/10
7 mu 16 chia 7 mũ 14 + 2 mũ 4 nhân 2 - 2011 mu không
1mu 2013 + 2013 mu 1 :(2013 mu 0 : 1 mu 2013)
(1 + 5 mu 2 + 5 mu 4 + 5 mu 6 + 5 mu 8)*x = 5 + 5 mu 2 + 5 mu 3 + 5 mu 4 +....+ 5 mu 10
C = 1 + 7 + 7 mu 2 + 7 mu 3 + ...+ 7 mu 101 chia het cho 8.
B= 1 + 3 + 3 mu 2 + 3 mu 3 + ....+ 3 mu 2000
D = 7 - 7 mu 4 + 7 mu 7 - 7 mu 10 - ... - 7 mu 298 + 7 mu 301
Tìm X biết :
x - 5 = 7 mu 10 :7 mu 8 + 2 mu 2018 nhan ( 2 mu 4 - 4 mu 2)