Question 196695
2  4  c  +1 = 1 2 c + 3(c+4) c + 4
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c=i
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Reasoning  is  cumulative,  12c +_2c =_4c resulted  in  12c+12c +24c,,,
substituting  and  collecting  terms  resulted  in  3c^2 =-1,  or  c=i
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24(i) +1 = 12(i) +3(i)^2 +12(i) +4
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checking
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24i +1 = 12i +3(-1) +12i +4
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24 i +1 = 24i -3 +4 = 24i +1,,, ok