Question

упростите выражение 4с+7/3с+3-83с/3с+5

Answer 1

$frac{4c+7}{3c+3} - frac{83}{3c+5}= frac{(4c+7)(3c+5)-83(3c+3)}{(3c+3)(3c+5)}= frac{12c^{2}+20c+21c+35-249c-249 }{9c^{2}+15c+9c+15}=$$frac{12c^{2} -208c-214}{9c^{2}+24+15}$