tim x ,
a, 2^8.4 .x=128,
b, 2.3^8 +3^x-1=63
BAI1 TIM X
a; 1/3 - 1/2 : x = 26/63
b; 6 - 1/3x = 6/8
tim x e N
6^x.6^3:6^5+81=11^2-4
(2x+1")^3-2012^0+63
6^x.6^3:6^5+81=11^2-4
(2x+1)^3 -2012^0=63
tim x e N
tim x;
a 63 chia hết cho (x-1)
b 14 chiia hết cho (2x+3)
c x+7chia hết cho x-1
d 2x+5chia hết cho x-2
tim x
a, x:12=10
b, 159:n=3
c, (x-3)-7=63
d, (3x-9).(4x-36)=5.9-15:3
tim x
a, x:12=10
b, 159:n=3
c, (x-3)-7=63
d, (3x-9).(4x-36)=5.9-15:3
tim so tu nhien x nho hon 63 de phan so 63/x+1 toi gian
1\3+1\15+1\35+1\63+1\99+1\143=1\195
1414+1515+1616+1717+1818+1919
2020+2121+2323+2424+2525
2 tim x
( 7*13+8*13):(29\3 tru x) bang 39
1\3+1\6+1\10+.....+2\x*(x+1) bang 2011\203