a) 3x +5 = 23

3x = 23 - 5

x = 18/3

x = 6

b) 5x -1 =14

5x = 15

x = 3

c) 5x – 12 = 3x

5x - 3x = 12

2x = 12

x = 6

d) 4y – 5 = 2y

4y - 2y = 5

2y = 5

y = 5/2

e) 2x +18 = 5x

5x - 2x = 18

3x = 18

x = 6

f) x – 6 = 5x +8 –x

3x = -14

x = -14/3

g) 5x + 2 = 2x -4

3x = -6

x = -2

h) 2x + 1 = x +11

x = 10

i) 4t+9 = 3t + 5

4t - 3t = 5 - 9

t = -4

j) 5x – 7 -2x = 26 – 3x

3x + 3x = 26 + 7

x = 33/6

x = 11/2

k) – 2x +7 = -4x -4

4x - 2x = -4 - 7

2x = -11

x = -11/2

l) 5x + 4 -2x = 26 – 3x

3x + 3x = 26 + 7

x = 33/6

x = 11/2

m) 15x = 8 + 20x

20x - 15x = -8

5x = -8

x = -8/5

n) y + 9 + 5y = - 3 + 2y + 7

6y - 2y = 4 - 9

4y = -5

y = -5/4

o) -8x = 9

x = -9/8

p) 3x – 4 = 5x – 10

5x - 3x = -4 + 10

2x = 6

x = 3

q) x + 1 = 7x -2

6x = 3

x = 1/2

r) x- 2x +2 = 4 -3x +6

3x + 3x = 10 - 2

6x = 8

x = 8/6

x = 4/3

s)2x – 12 + 3x = 5 + 8x +4

8x - 5x = 9 + 12

3x = 21

x = 7

t) x – 6 = 5x + 8 – x

4x - x = -14

x = -14/3