Rewrite the second equation as: c = 5.35 - 3m Now plug this new equation into the first equation in place of the c.
3(5.35 - 3m) + 2m = 10.80 16.05 - 9m + 2m = 10.80 Combine like terms 16.05 - 7m = 10.80 Subtract 16.05 from both sides -7m = 10.80-16.05 -7m = -5.25 Divide both sides by -7 m = 5.25 m - .75 Letter B 75 cents per pound