1)-5х+3(3+2х)=2
– 5x + 9 + 6x = 2
– 5x + 6x = 2 – 9
1x = -7
x = -7
2)30-х=3(20-х)
30 – x = 60 – 3x
– x + 3x = 60 – 30
2x = 30
x = 15
3)2u-3(7-2u)=3
2u – 21 + 6u = 3
2u + 6u = 3 + 21
8u = 24
u = 3
4)12-у=5(4-2у)+10
12 – y = 20 – 10y + 10
– y + 10y = 10 + 20 – 12
9y = 18
y = 2
5)2-2(х-8)=4х-4
2 – 2x + 16 = 4x – 4
– 2x – 4x = – 4 – 16 – 2
-6x = -22
-3x = -11
х= -11/-3
х=3,66666666667
6)2,5z-3=z-4,5
2,5z – z = – 4,5 + 3
1.5z = -1.5
z = -1
7)3х+5=0,5х=10
3x + 5 = 0.5x = 10
3x – 0,5x = 10 – 5
2.5x = 5
x = 2
8)2,6+2х=1,9+6,6
2x = 6,6 + 1,9 – 2,6
2x = 5.9
x = 2.95
1)-5х+3(3+2х)=2
– 5x + 9 + 6x = 2
– 5x + 6x = 2 – 9
1x = -7
x = -7
2)30-х=3(20-х)
30 – x = 60 – 3x
– x + 3x = 60 – 30
2x = 30
x = 15
3)2u-3(7-2u)=3
2u – 21 + 6u = 3
2u + 6u = 3 + 21
8u = 24
u = 3
4)12-у=5(4-2у)+10
12 – y = 20 – 10y + 10
– y + 10y = 10 + 20 – 12
9y = 18
y = 2
5)2-2(х-8)=4х-4
2 – 2x + 16 = 4x – 4
– 2x – 4x = – 4 – 16 – 2
-6x = -22
-3x = -11
х= -11/-3
х=3,66666666667
6)2,5z-3=z-4,5
2,5z – z = – 4,5 + 3
1.5z = -1.5
z = -1
7)3х+5=0,5х=10
3x + 5 = 0.5x = 10
3x – 0,5x = 10 – 5
2.5x = 5
x = 2
8)2,6+2х=1,9+6,6
2x = 6,6 + 1,9 – 2,6
2x = 5.9
x = 2.95