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2). -4x = 12
x = 12/-4
x = -3
6). 1/4x =2/3
x = 2/3 * 4/1
x = 8/3
14). 5p-8 =7p+12
5p-7p = 12+8
-2p = 20
p = 20/-2
p =-10
17). 4(x-3) - 2(x-3) = 8
4x - 12 - 2x +6 =8
2x - 6 = 8
2x = 14
x = 14/2
x= 7
19). 3(2x-3) - 2(x+1) = x-3
6x - 9 - 2x - 2 = x-3
4x - 11 = x - 3
4x - x = -3 + 11
3x = 8
x = 8/3