Question

resolva a expressão: 64 1/3 + 81 1/2 -12

Answer 1

$64 \frac{1}{3}+81 \frac{1}{2}-12 = \ .....passando \ as \ fracoes \ para \ improprias \\\\ \frac{193}{3}+ \frac{163}{2}-12 = \ ......efetuando \ as \ operacoes\\\\ \frac{193}{3}+ \frac{163}{2}- \frac{12}{1}= \ ....mmc = 6\\\\ \frac{386+489-72}{6} = \frac{803}{6} = 133\frac{5}{6}$