10x – 13 = 2x + 26
10x – 2x = 26 + 13
8x = 39
x = 4.875
4y – 15 = 2y + 5
4y – 2y = 5 + 15
2y = 20
y = 10
18a + 3 = 6a + 15
18a – 6a = 15 – 3
12a = 12
a = 1
– 3x + 2 = x – 6
– 3x – x = – 6 – 2
-4x = -8
x = 2
– 10x + 20 = – 4x + 10
– 10x + 4x = 10 – 20
-6x = -10
-3x = -5
x = -5/-3
х=1,66666666667
10x – 13 = 2x + 26
10x – 2x = 26 + 13
8x = 39
x = 4.875
4y – 15 = 2y + 5
4y – 2y = 5 + 15
2y = 20
y = 10
18a + 3 = 6a + 15
18a – 6a = 15 – 3
12a = 12
a = 1
– 3x + 2 = x – 6
– 3x – x = – 6 – 2
-4x = -8
x = 2
– 10x + 20 = – 4x + 10
– 10x + 4x = 10 – 20
-6x = -10
-3x = -5
x = -5/-3
х=1,66666666667