3х - 6 =4х
4x - 3x = -6
x = -6
6х-21=9
6x = 9 + 21
6x = 30
x = 30 : 6
x = 5
3х-4+2х=6+2х
5x - 4 = 6 + 2x
5x - 2x = 6 + 4
3x = 10
x = 10 : 3
x = 3 1/3
5х+15=10
5x = 10 - 15
5x = -5
x = -5 : 5
x = -1
4-2у=у-5
y + 2y = 5 + 4
3y = 9
y = 9 : 3
y = 3
50-7у-16=3у-18
34 - 7y = 3y - 18
3y + 7y = 34 + 18
10y = 52
y = 52 : 10
y = 5,2
3х - 6 =4х
4x - 3x = -6
x = -6
6х-21=9
6x = 9 + 21
6x = 30
x = 30 : 6
x = 5
3х-4+2х=6+2х
5x - 4 = 6 + 2x
5x - 2x = 6 + 4
3x = 10
x = 10 : 3
x = 3 1/3
5х+15=10
5x = 10 - 15
5x = -5
x = -5 : 5
x = -1
4-2у=у-5
y + 2y = 5 + 4
3y = 9
y = 9 : 3
y = 3
50-7у-16=3у-18
34 - 7y = 3y - 18
3y + 7y = 34 + 18
10y = 52
y = 52 : 10
y = 5,2