Question

o valor da expressao a+b, para a=1/2 , b=1/3, 1-ab?

Answer 1

1-a×b=
1-$\frac{1}{2}$×$\frac{1}{3}$
1-$\frac{1.1}{2.3}$=1-$\frac{1}{5}$
$\frac{0}{5}$