824 - 824 : 824 = 823x
824 - 1 = 823x
823 = 823 x
x = 823 : 823
x = 1
( x - 1 ) + 2x - 2 + 3x - 3 = 0
( x - 1 ) + 2x - 2 + 3x = 0 + 3
( x - 1 ) + 2x - 2 + 3x = 3
( x - 1 ) + 2x - 2 + x = 3 : 3
( x - 1 ) + 2x - 2 + x = 1
Làm tiếp nhé
824 - 824 : 824 = 823x
824 - 1 = 823 x
823 x = 823
x = 1
Vậy x = 1
a)824-824:824=823x
=>824-1=824x
=>823=823x
=>x=1
b)=>x-1+2x-2+3x-3=0
=>(x+2x+3x)+(-1-2-3)=0
=>6x-6=0
=>6x=6
=>x=1