问题
解答题
计算:[50-(
|
答案
原式=[50-(
-7 9
+11 12
)×36]÷491 6
=[50-(
×36-7 9
×36+11 12
×36)]÷491 6
=[50-(28-33+6)]÷49
=(50-1)÷49
=49÷49
=1.
计算:[50-(
|
原式=[50-(
-7 9
+11 12
)×36]÷491 6
=[50-(
×36-7 9
×36+11 12
×36)]÷491 6
=[50-(28-33+6)]÷49
=(50-1)÷49
=49÷49
=1.