计算: (-5)×(-8 7 9 )-(-7)×(+ 79 9 )+12÷(- 9 79

计算: (-5)×(-8 7 9 )-(-7)×(+ 79 9 )+12÷(- 9 79 )
2025-06-25 12:45:05
推荐回答(1个)
回答1:

原式=5×
79
9
+7×
79
9
-12×
79
9

=(5+7-12)×
79
9

=0.