问题
解答题
计算:(-5)×13
|
答案
原式=-5×13
+9×137 12
-4×137 12
+(7 12
+11 8
-7 3
)×(-24)15 4
=13
(-5+9-4)-7 12
×24-11 8
×24+7 3
×2415 4
=0-33-56+90
=1.
计算:(-5)×13
|
原式=-5×13
+9×137 12
-4×137 12
+(7 12
+11 8
-7 3
)×(-24)15 4
=13
(-5+9-4)-7 12
×24-11 8
×24+7 3
×2415 4
=0-33-56+90
=1.