4a+8a = 12a
12a divided by 2
= 6a
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4
8a+4a=144 12a=144 12a/12=144/12 A=144
(48a3+32a2+16a)/4a = 12a2+8a+4
Add the equations: 4a + 4a - 5b + 5b = 7 + 17 ie 8a = 24 a = 3, so b = 1
it could be anything. What is a? if it is 3 then you do 4x3=12+3x3=9+3=24 * * * * * It is 8a.