tim x thuoc Z biet |x-2| - 5(x-4) = 20 - 5x
tim x biet
/ 2x+1/+/x-2/=0
/x+5/=2x-1
/x+1/+/x+2/=/5x-3/
giup mik vs mai mik nop roi
Tim x thuoc N biet 5/ 1.6 +5/ 6.11+....+5/ (5x+1).(5x+6)=2005/2006
Tim x biet:|x2 -5x +4| = 5x-x-4
Tim x biet :
I 5x : 5 I = 1
tim x biet
5x + 1 : x
x+31:x
tim x biet 5x chia het cho x-1
tim xthuocN biet
5x^2-5=2^3.3.10
4(x-2)^3+36:3^2=581
12.3^x+24=340
4.7^x-5^4=2^2.5.23
lxl<6
5<x<11
tim x biet
5x+15=0
1-2x=37
x+35=-22-x
( 6x-4^2).7^8=2x7^9
