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If: 5f+3 = 28 then f = 5 because (5*5)+3 = 28
4-5f=64 subtract 4 on both sides to isolate 5f. 4-4 cancels out and 64-4 is 60 -4 -4 -5f=60 divide both sides by -5 to isolate f. -5/-5 cancels out and 60/5 is 12 /-5 /5 f=12 now f is isolated and the solution on the other side is 12! You should now how to solve equations by now unless your mentally retarded btw.
t=5f t is the number of toes F is the number of feet
-6 plus 2f plus 3f equals 29 -6 + 2f + 3f = 29 -6 + 5f = 29 5f = 35 f = 7
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