a) 3x – 2 = 2x – 3
(=)3x-2-2x+3=0
(=)x+1=0
(=)x=-1
b) 3 – 4y + 24 + 6y = y + 27 + 3y
(=)3-4y+24+6y-y-27-3y=0
(=)-2y=0
(=)y=0
c) 7 – 2x = 22 – 3x
(=)7-2x-22+3x=0
(=)x-15=0
(=)x=15
d) 8x – 3 = 5x + 12
(=)8x-3-5x-12=0
(=)3x-15=0
(=)3x=15
(=)x=5
e) x – 12 + 4x = 25 + 2x – 1
(=)5x-12-25-2x+1=0
(=)3x-36=0
(=)3x=36
(=)x=12
f) x + 2x + 3x – 19 = 3x + 5
(=)6x-19-3x-5=0
(=)3x-24=0
(=)3x=24
(=)x=8
g) 11 + 8x – 3 = 5x – 3 + x
(=) 11 + 8x – 3 - 5x + 3 - x=0
(=)2x+11=0
(=)x=-$\frac{11}{2}$
h) 4 – 2x + 15 = 9x + 4 – 2x
(=)4-2x+15-9x-4+2x=0
(=)-9x+15=0
(=)-9x=-15
(=)x=$\frac{5}{3}$