засчитай как лучший ответ
1) 5x + 4 = x + 12
5x - x = 12 - 4
4x = 8
x = 2
2) 13 - 5y = 8 - 3y
-5y + 3y = 8 - 13
-2y = -5
y = 2.5
3) 6y - 20 = 2( 5y - 10 ) - 14y
6y - 20 = 10y - 20 - 14y
6y - 10y + 14y = 20 - 20
10y = 0
y = 0
4) 4( x + 3.6 ) = 3x - 1.4
4x + 14.4 = 3x - 1.4
4x - 3x = -14.4 - 1.4
x = -15.8
5) ( 7 - 5k ) - ( 8 - 4k ) + (5k + 6 ) = 8
7 - 5k - 8 + 4k + 5k + 6 = 8
-5k + 4k + 5k = 8 - 7 + 8 - 6
4k = 3
k = 3/4
5x+4=x+12
5х - х = 12 - 4
4х = 8
х = 2
13-5y=8-3y
-5у +3у = 8 -13
-2у = -5
у = 2,5
6y-20=2(5y-10)-14y
6у - 20 = 19у - 20 - 14у
6у - 19у + 14у = - 20 + 20
у = 0
4(x+3,6)=3x-1,4
4х + 14,4 = 3х - 1,4
х = -1,4 - 14,4
х = - 15,8
(7-5k)-(8-4k)+(5k+6)=8
7 - 5к - 8 + 4к + 5к + 6 = 8
-5у + 4к +5к = 8 - 6 + 8 - 7
4к = 3
к = 3/4
к = 0,75
засчитай как лучший ответ
1) 5x + 4 = x + 12
5x - x = 12 - 4
4x = 8
x = 2
2) 13 - 5y = 8 - 3y
-5y + 3y = 8 - 13
-2y = -5
y = 2.5
3) 6y - 20 = 2( 5y - 10 ) - 14y
6y - 20 = 10y - 20 - 14y
6y - 10y + 14y = 20 - 20
10y = 0
y = 0
4) 4( x + 3.6 ) = 3x - 1.4
4x + 14.4 = 3x - 1.4
4x - 3x = -14.4 - 1.4
x = -15.8
5) ( 7 - 5k ) - ( 8 - 4k ) + (5k + 6 ) = 8
7 - 5k - 8 + 4k + 5k + 6 = 8
-5k + 4k + 5k = 8 - 7 + 8 - 6
4k = 3
k = 3/4
5x+4=x+12
5х - х = 12 - 4
4х = 8
х = 2
13-5y=8-3y
-5у +3у = 8 -13
-2у = -5
у = 2,5
6y-20=2(5y-10)-14y
6у - 20 = 19у - 20 - 14у
6у - 19у + 14у = - 20 + 20
у = 0
4(x+3,6)=3x-1,4
4х + 14,4 = 3х - 1,4
х = -1,4 - 14,4
х = - 15,8
(7-5k)-(8-4k)+(5k+6)=8
7 - 5к - 8 + 4к + 5к + 6 = 8
-5у + 4к +5к = 8 - 6 + 8 - 7
4к = 3
к = 3/4
к = 0,75