第32页

信息发布者:
8
0
3
-6
2
$-1$
C
C
解:原式$=4÷(-4)$
$=-1$
解:原式$=4×(-4)$
$=-16$
解:先计算括号内:
$-\dfrac{3}{4}-\dfrac{1}{6}+\dfrac{5}{12}=-\dfrac{9}{12}-\dfrac{2}{12}+\dfrac{5}{12}=-\dfrac{1}{2}$
原式$=(-\dfrac{1}{36})÷(-\dfrac{1}{2})$
$=(-\dfrac{1}{36})×(-2)$
$=\dfrac{1}{18}$
解:原式$=(-42-\dfrac{6}{7})×\dfrac{1}{6}$
$=-42×\dfrac{1}{6}-\dfrac{6}{7}×\dfrac{1}{6}$
$=-7-\dfrac{1}{7}$
$=-7\dfrac{1}{7}$