89+2t = 10t+25
89-25 = 10t-2t
64 = 8t
t = 8
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12(t+6)+8=4(2t-1)+2t 12t+72+8=8t-4+2t 12t-2t-8t=-72-8-4 2t=-84 2t/2=84/2 t=42
3r + 3r + 2t = 6r + 2t
Rearranging the the equation to make c the subject:- c = kVp-2t
R = S + 2T S = 3T .... substitute R = (3T) + 2T R = 5T
4t +7