Đáp án:
Giải thích các bước giải:
a)
$\dfrac{-27}{45}$=$\dfrac{-27:5}{45:5}$=$\dfrac{-3}{5}$
b)
$\dfrac{32}{12}$=$\dfrac{32:4}{12:4}$=$\dfrac{8}{3}$
c)
$\dfrac{-26}{-36}$=$\dfrac{26:2}{36:2}$=$\dfrac{13}{18}$
d)
$\dfrac{9.6-9.3}{18}$=$\dfrac{27}{18}$=$\dfrac{27:9}{18:9}$=$\dfrac{3}{2}$
e)
$\dfrac{17.5-17}{3-20}$=$\dfrac{-68}{17}$=$\dfrac{-68:17}{17:17}$=-
f)
$\dfrac{49+7.49}{49}$=$\dfrac{49.(1+7)}{49}$=$\dfrac{49.8}{49}$=8