12a + 6b + 9a + 14b =(12a + 9a) + (6b + 14b) =21a + 20b
12a
8a+4a=144 12a=144 12a/12=144/12 A=144
12a + 6b + 6c = 6(2a + b + c)
It is: 12a+2 when simplified
-24
As written, that equals 32a - 8, which factors to 8(4a - 1) If you meant 20a^2 + 12a - 8, that factors to 4(5a - 2)(a + 1)
12a + a - 3a = 10a
12*a+8 =12a+8
a=3 is the answer to 12a=48
13a
18