đặt 4x-1=t
=>t4=t3
=>t4-t3=0
=>t3(t-1)=0
=>t3=0 hoặc t-1=0
=>t=0;1
=>x=1/4;1/2
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đặt 4x-1=t
=>t4=t3
=>t4-t3=0
=>t3(t-1)=0
=>t3=0 hoặc t-1=0
=>t=0;1
=>x=1/4;1/2
3/4x-1/4=2(x-3)=1/4x
3/4x-1/4=2(x-3)+1/4x
3/4x + 1/2(x+1)=-11/4
0,75x - x + 1 và 1/4x = 20%Timf `x`:
`(x - 2)/3 = (x + 1)/4`
`(x - 2) . 4 = (x + 1) . 3`
`<=> 4x - 8 = 3x + 3`
`<=> 4x - 3x = 3 + 8`
`<=> (4 - 3)x = 11`
`=> x = 11`
cíu tui zới
tui hứa sẽ tick
3) 2x + 3 + 2x = 36
4) 4x+1 - 22x = 12
5) 5x+3 - 5x+1= 3000
4) 4x+1 - 22x
Tìm x biết:
3/4x-1/4=2(x-3)+1/4x
8/9x-2/3=1/3x+1 1/3
a/ 2.(1/2x -1/3)-3/2=1/4
b/ (1/2+2x)(2x-3)=0
c/ (4x-5)(5/4x-2)=0
d/ 1/4-(2x+1/2)mũ hai=0
Tìm x biết
1)3/4x-1/4=2(x-3)+1/4x
2)30%.x-x+5/6=1/3
3)8/9x-2/3=1/3x+1 1/3
Tìm x biết:
1)3/4x-1/4=2(x-3)+1/4x
2)30%.x-x+5/6=1/3
3)(2.x-1).(3.x+9)=0