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4c+1-5+2c = 6c-4.
5b+c-43b-2c+1=1-38b-c
1
Not sure about the original formula, but one that works is b = a/(2c + 1)
b = 1/2 (a - c) or for a = 3b - 2c: b = 1/3 (a + 2c) for a= 2bc + d is b= (a-d)/2c a= 2b +c is c= a - 2b b=1/3(a-2c)
4c+1-5+2c = 6c-4.
5b+c-43b-2c+1=1-38b-c
1
1
Not sure about the original formula, but one that works is b = a/(2c + 1)
b = 1/2 (a - c) or for a = 3b - 2c: b = 1/3 (a + 2c) for a= 2bc + d is b= (a-d)/2c a= 2b +c is c= a - 2b b=1/3(a-2c)
If a=2bc+db= (a - d) / 2c If a=2b+c b=1/2(a-c)
1
x = 13 x 12 + 1 = 43 x 1 + 1 = 43 + 1 = 44 = 4
20+40c is the answer.
1 + 44 + 5 - 50 = 0
1-2c = -1