问题
解答题
|
答案
÷210 13
-119 22
×2 5
+7+11 13
×1 5 22 63
=
×10 13
-22 63
×7 5
+7+11 13
×1 5 22 63
=(
+10 13
)×1 5
-22 63
×7 5
+711 13
=
×63 65
-22 63
×7 5
+711 13
=
-122 65
+712 65
=6
.2 13