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4*a+7*b+3*c;3*a+3*b+c;b+c
x-(4/10) = 9/2
a+5*b+3*c;4*a+7*b+3*c;3*a+3*b+c
b+c;a+5*b+3*c;4*a+7*b+3*c
1-cos(x^2)
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