k: =>10(24-3x):15=6
=>10(24-3x)=90
=>24-3x=9
=>3x=15
hay x=5
n: =>740:(x+10)=100-26=74
=>x+10=10
hay x=0
m: =>4(x-2)+15=27
=>4(x-2)=12
=>x-2=3
hay x=5
k)250 - 10 ( 24 - 3x ) : 15 = 244
10 ( 24 - 3x ) : 15 = 250 - 244
10 ( 24 - 3x ) : 15 = 6
10 ( 24 - 3x ) = 6 x 15
10 ( 24 - 3x ) = 90
24 - 3x = 90 : 10
24 - 3x = 9
3x = 24 - 9
3x = 15
x = 15 : 3
x = 5
m)30 - [ 4 . ( x - 2 ) + 15 ] = 3
4 . ( x - 2 ) + 15 = 30 - 3
4 . ( x - 2 ) + 15 = 27
4 . ( x - 2 ) = 27 - 15
4 . ( x - 2 ) = 12
x - 2 = 12 : 4
x - 2 = 3
x = 3 + 2
x = 5
n)740 : ( x + 10 ) = 102 - 2 . 13
740 : ( x + 10 ) = 100 - 26
740 : ( x + 10 ) = 74
x + 10 = 740 : 74
x + 10 = 10
x = 10 - 10
x = 0
ô)102021 . ( x + 5 ) = 102022
102021 . ( x + 5 ) = 102021 . 10
=> x + 5 = 10
x = 10 - 5
x = 5
k)250 - 10 ( 24 - 3x ) : 15 = 244
10 ( 24 - 3x ) : 15 = 250 - 244
10 ( 24 - 3x ) : 15 = 6
10 ( 24 - 3x ) = 6 x 15
10 ( 24 - 3x ) = 90
24 - 3x = 90 : 10
24 - 3x = 9
3x = 24 - 9
3x = 15
x = 15 : 3
x = 5
m)30 - [ 4 . ( x - 2 ) + 15 ] = 3
4 . ( x - 2 ) + 15 = 30 - 3
4 . ( x - 2 ) + 15 = 27
4 . ( x - 2 ) = 27 - 15
4 . ( x - 2 ) = 12
x - 2 = 12 : 4
x - 2 = 3
x = 3 + 2
x = 5
n)740 : ( x + 10 ) = 102 - 2 . 13
740 : ( x + 10 ) = 100 - 26
740 : ( x + 10 ) = 74
x + 10 = 740 : 74
x + 10 = 10
x = 10 - 10
x = 0
ô)102021 . ( x + 5 ) = 102022
102021 . ( x + 5 ) = 102021 . 10
=> x + 5 = 10
x = 10 - 5
x = 5